2 becoming healthy and lean-
Most diets work if you stick to them so just pick one that you like, one that has balance as far as the various food groups. Don't be discouraged if you slip up but just get right back on the diet. Just as with dieting any form of exercise is good as long as you stick to it. Pick something that works for you, morning walks, running, biking, calisthenics. Try mixing it up doing different exercises on different days. Working out is boring so plug in those earphones and jam it up with music or if your social with other people. Here's the most important part, you have to do both diet and exercise. Doing just one of the other isn't effective. Here's the part you don't want to hear, a good night sleep is very beneficial to weight loss, especially as you start to get older and your metabolism is slowing down. This all sounds very cliche but good health is a lifestyle.