Good luck! I'm a fitness enthusiast, and I know diet affects your weight even more than exercise. Some unsolicited suggestions: 1) don't ever be hungry, it signals your body to store fat. Try eating smaller more frequent meals 2) eat carbohydrates earlier in day (like rice, bread, sweets) - it gives your body the chance to burn it during the day instead of storing it 3) minimize carbohydrates, eat more lean protein 4) drink LOTS of water, you will notice water weight but it increases your metabolism (and avoid sweet drinks - huge calories) 5) walking is great exercise and low impact (all those other sports are good too) but enjoy it! 6) give yourself time - it is a lifestyle change. If you lose weight too fast through a crash diet, it will return and be heavier. I think 5 kg is a great goal for the next few months and I think you will fell better also! I just lost 5 kg. but I am 180 cm, now 80 kg - so 5 kg is a bigger percentage for you.