So every year my resolutions revolve around a better me, which usually involves a better waistline.
In 2014, I may try, before every meal, to say "Hara Hachi Bu," which means, "I will stop eating when I am 80% full." This Japanese phrase, when faithfully practiced, supposedly, helps you consciously limit the amount of food you consume, making overeating less likely. It also slights those uninvited guests - high blood pressure and high cholesterol. There are many things you can do to remind yourself to say this, maybe set up phone alerts or obtain a new year's tat on your forearm.
Another healthy choice would just be to make eating a mindful choice. Focus on the food when it's in front of you. The word "savor" was invented for just this reason.
The genetics card is a minor player - our longevity is 75% dependent on our lifestyle.
Other positive habits, as you know, include regular church attendance, volunteer efforts, sleeping, meditating. (Uncovering my purpose may have to wait until 2015.)