Other was are getting plenty of exercise each day. My main way to get exercise is through walking or swimming. I find both of those methods both enjoyable and relaxing.
Of course, if you smoke, stop smoking today. We all know of detrimental smoking is to your health. You also want to avoid excess drinking also. One or two drinks a day can help your health, but more that that is bad for your health.
Eat 5 servings of fruits and vegetables a day. The fiber and roughage is great and the vitamins are tremendous. Filling up on them also keeps your appetite down and it is easier to avoid reaching for those bad foods with sugar and empty calories.
Practice stress relievers like exercise, mediation, prayer or accupunture. Relax and let the little things go. It is not what you are going through, but how you react to it.
And last of all, have a great day!