The only reliable way to keep healthy and fit, is to change your habits completely. There are no healthy short-term solutions, and even if you manage to lose a great amount of weight, you are likely to put on twice the amount if you crash-diet. It's a change you have to be willing to commit to one hundred percent.

I managed to throw off 20 kg a couple of years ago, and I went from 79 kg to 59 kg, which is my current weight. I started to work out and now I work out for 45 minutes every single day. I haven't missed one single day in three years. I cut out sugar completely, and stayed clear of carbohydrates.

It really is a matter of changing your way of life completely. It should never feel like a chore, but something that is a natural part of your every day life.