What should i do specifically to be healthy?

Diet, exercise,happy: A healthy diet is essential for good health- the basis should be fruits & veggies. See http://www.Drfuhrman.Com/library/what-is-a-nutritarian-diet.Aspx minimize exposure to environmental toxins. Being happy is essential! this often involves doing work you enjoy, helping others, having good relationships & a spiritual connection. Try to reduce stress- meditation helps. Stay physically active.