Simple Savings has become a way of life. I don't have to think about saving or spending now - it just comes naturally. In the past five and a half years, we have managed to pay a whopping $150,000 (principal) plus interest off our mortgage and still live happily and comfortably. This is all due to Simple Savings.

My husband and I have three young children and our combined income is only average, ranging between $50,000 - $70,000 per year. Readers may think 'I could never do that, I would have to go without too much' or 'that's impossible', but this is not true. We don't go without; in fact we feel we do pretty well! I cannot name just one single thing that has helped us to achieve this and still be happy - it is a multitude of tips and hints, all of which can be found on your site. I have always been a Simple Saver, so for me this was not hard, but my husband found not being able to spend money willy-nilly difficult at first. These days, I am proud to say he thinks before he spends and at times even proudly tells me of his smart purchase or why he didn't purchase!

I could go on and on giving examples on how to do what we have done, where we saved money and how we used it more wisely, but that would make a book and to be honest all people have to do is log on to your site, it's all there. Focus on your goals, walk hand in hand with Simple Savings and your dreams can come true.

I am a young woman on a single income, paying off my homeloan. I know the amazing financial savings that are possible when you make extra payments of any size on a large loan. However, because I am on a low annual income I often find it very hard to find any spare cash after all the bills have been paid.

So for birthdays and Christmas, when my friends and family are seeking ideas for gifts to give me, instead of asking for things I don't really need, I ask them to deposit the amount that they would have spent on a gift straight on to my homeloan. I am very close with my friends and family and they understand my financial situation. They are only too happy to help me get ahead and hopefully one day own my own home. It is a gift that keeps giving and one I truly appreciate. I read recently that for every extra $1.00 you are able to pay against the principal of your homeloan you will save $2.00 in return and take years off your loan. The understanding and generosity of my friends will help save me tens of thousands in interest over the years.

Making potato wedges at home is much cheaper than buying them frozen from the supermarket. I use my OXO Good Grips apple divider (bought from a kitchen shop) to cut up a 5kg bag of spuds. I give the spuds a wash before cutting them up into eight wedges and one cylindrical wedge (the kids all fight over these ones). After popping them in boiling water for a couple of minutes I put them onto paper towel to dry, then into freezer bags. These are quick, economical and you can vary the seasonings in different bags, and have them on hand in the freezer for a quick snack or side dish.

My mother, sister and I have changed our spendthrift ways to help each other out and enjoy quality time and a regular meal together.

We used to spend our weekends shopping. Of course we bought things we did not need. Even worse, we spent tons of money on eating out in the mall! So, we changed our habits! Once a month we spend a day at one of our houses, taking it in turns. The hostess is responsible for lunch and the others help her with a project around her house.

For example, we have painted a playroom, done general cleaning, cleaned a garage, collected items for charity and more!

Instead of paying for one expensive doona, and the dry cleaning costs that come with it, buy two or three cheap doonas, pin them together at the corners, and put them into the same doona cover.

Because cheap doonas are thinner, you can wash them one at a time in your washing machine, and you can also adjust the warmth. When the weather starts getting warmer, just take one doona out of the cover and put it away in the cupboard.

I have turned my love of a good bargain into something far more valuable! Whenever I am tempted to buy something I could possibly do without, I first calculate how much we would save by paying that money into our mortgage instead. For example, I recently saw a new dress on sale for $49.99 - a bargain, right? However, I paid a quick visit to a mortgage calculator website and discovered that if I didn't buy the dress and put that money onto our mortgage instead, it would take a whole month off the loan term and save us $334.39c in interest. In other words, my 'bargain' dress would really cost me over $300!

Looking at my purchases this way has become a really easy and effective way to curb my spending habit. Now I carry a piece of paper in my wallet with various prices on and I can see how much I would really be spending. It's amazing how much stronger my willpower becomes when I check my piece of paper before buying something and find out what its real cost is!

I am 22 years old and on a low income, but am well on the way to saving for my first house! I developed a simple system that keeps my savings goal at the forefront of my mind and encourages the support of those around me.

I've always found it hard to save, but one day I got a big piece of cardboard and wrote 'My House Deposit' at the top. On the right hand side I cut out images of a house, a kitchen and a loungeroom that I would love to own one day. On the left hand side I drew a giant thermometer and on the side wrote the figures $0 to $40 000 ascending, just like on a real thermometer. Whether or not I need $40 000 is irrelevant; I look at this table every day and whenever I save another $500, I colour in with a red crayon up to the amount on the tally. I use hints from Simple Savings, such as making my own lunch every day and not buying clothes if I don't need them and now whenever I make a purchase I think of my house deposit and how much I want it far more than a coffee or new shoes!

An unexpected bonus of having this chart is that I've found my family and boyfriend have become aware of my goals and I get lots of support along the way. This visualisation technique really does wonders, and most importantly you are making a concrete agreement with yourself and you stop losing sight of your goals. I'm already a quarter of the way to reaching mine!

Here's how to lose weight and save!

A couple of years ago I joined Weight Watchers and went to four meetings. Joining was free from a coupon in a magazine but the meetings cost something like $15.95 each. I couldn't get motivated!

A few weeks ago, as I was bucketing the bath water into the toilet cistern to save water (a tip from Simple Savings), I realised that I am doing the exact same thing that Weight Watchers meetings could not motivate me to do. At WW the main things they encourage you to do are to eat 10% less at meals (this also helps the budget at shopping time) and to exercise more (this comes from carting water between the bath and the toilet and using the rain water tank to water the vegie patch and so on).

I am now losing about half a kilogram a week without even trying and I'm not paying $16 to do it. In fact, I'm making other savings as well - our last water bill was $40 less than that for the same time last year.

What has also happened for me in the last few months is that while saving money I have also become better at time management - planning meals for a month and shopping with a list have cut out a lot of unnecessary trips to the shops (not to mention the extra expense). I have cut $60 from my husband's spending money by supplying his lunch every day, along with some soft drink, a large bottle of water and a snack. He is happy because he still has a small amount of 'sanity money' in his pocket to splurge with every week.

My food budget absorbed this when I switched from a lot of brand name products to BI-LO brand products - I save from as little as $0.10c per item up to a couple of dollars per item. The biggest savings I make come from bulk buying - last month BI-LO had five kilograms of potatoes for $5.00, but when I went to the greengrocers they had them at $6.00 for a 20 kilo bag. These lasted for about a month and I couldn't bring myself to go to the fish and chip shop when I had 15 kilograms of 'free' potatoes in the pantry, so we had home-made wedges instead, saving another $6.00.

The excitement of saving money has also inspired me to do the things that I don't enjoy so much, such as mending and ironing, and I am gradually working my way through every room and cupboard, taking inventory of what can be used and how best to use it in a way that will save me money. I never thought I would actually look forward to going through years of accumulated junk! By organising my house, I am becoming a 'cleanie' and leaving the old 'messy' me behind - and I am enjoying every minute of it!

After reading The $21 Challenge, I thought I would see which other areas of my life I could apply the Challenge to.

First, I opened a separate bank account and now deposit $21 every week before I do anything else with my money. I see this as a type of retirement fund – it will be nice to see the funds in 30 years time!

My next $21 Challenge is to only put $21 worth of petrol in my car each week. I will park my car further away from where I need to go; this will save money and improve my fitness and wellbeing.

When my phone contract ends soon, I am going to challenge myself to spend no more than $21 on pre-paid phone credit each month - now that will be a challenge!

There are so many ways we can implement the $21 Challenge in our lives, thanks to Fiona and Jackie's inspirational book.