I Need To Change Me

I work in Cardiothoracic/General ICU but most of our patients are post operative heart surgeries. Looking at them sometimes or shall I say most of the time made me scared. I know if I will not start a good lifestyle I will end up like them. I don't want get sick and have a surgery but what can I do if I am doing anything about it? I need to start a healthy living - exercise, healthy diet and maybe diet pills will do good to me. How about you? Any plans?