Go for regular exercises
Spare time for events which you enjoy, on regular basis.
Regular rest and sleep is very important for the body relaxation.
Meditation could be one of the dependable ways of achieving relaxation of complete body. Easier way could be: Select a peaceful place. Think of anything which you find interesting. It could be your girlfriend/boyfriend, your children or anything which you love to think about. Close your eyes and start thinking about it. Idea is to limit your thoughts within a smaller circuit. You may sit in that position for 15-25 minutes. When you get up, you will find it very relaxing.