Some research indicates that happy people live longer. While cause and effect can't be proven, there is correlation between happiness and longevity.
Pick up a new activity involving the whole family and friends such as hiking, group sports, skiing or riding a bicycle. Finding a hobby can give you the enjoyment and reduce stress. You'll also start meeting people who have the same interests as you and may make some new friends.
So try new things, meet new people, stay active and be happy.