If you are a glass half full type of person, it may be good for you health. People with a sunny disposition may have a reduced risk of heart disease and stroke, higher good cholesterol, and a stronger immune system. While some people are born optimistic, experts say you can teach yourself to be a positive person with four easy steps...switch your thinking from problem to solution, get yourself a mental coach or cheerleader, take one minute each day to visualize success and recognize what you have done well at the end of each day!