Increase your life span by not giving up. A Healthy lifestyle in your mind, body and soul is hard at the beginning, but the more you engage in positive things that will help you...you will not give up.
The definition of believe, is to have confidence or faith in. So, YOU have to believe in YOU even when nobody else does. Wanting to live healthier takes a lot of faith, patience, strength and conditioning.
Part of getting fit and making life changes is setting a goal. You have to figure out where you want to be in order to construct the right plan of action. It's OK to set a goal and then change it once you reach it, but you have to start somewhere.