Listen to music, go for a walk, soak in the tub, watch your favorite movie, visit a friend, read a good book.
To beat stress I used to game for 6+ hours a day many years ago until I burned out and got tired of FPS games. I now just social network, on FB and Twitter, and play word games.
Sport is the most healthy thing to beat stress, also you can try to meditate, there is a lot of schools but be carefull
Have positive outlook to your life. If your expectations from yourself are a cause of stress, then reassess your expectations. See if these are realistic. Evaluate the hurdles and look for the ways on how to handle those. Most probably, you will find that you are not able to maintain balance between work and family or personal life. You can reduce stress by redefining your priorities and working constantly and consciously towards achieving your goals. Many people who are unable to deal with stress have very poor time management skills. Prioritize your tasks and have some schedule for important tasks and meetings. Try to organize your routine such as you can note down important appointments or meetings on paper. You can maintain a checklist before moving out of your house so that you are not late for an urgent meeting or appointment. You may be stressed because you want to do most of the stuff by yourself. Trust people around you and see if your kids are grown up enough to deposit a bill, or do get your vehicle repaired from workshop. Delegating responsibilities can help you reduce stress on yourself. It also gives you more time that you can use for recreation or for a family outing. A good sense of humour is very important to reduce stress. A good hearted laughter is an excellent tonic to help you relieve stress. History is a witness that most well known artists who faced many hardships in their early life had very good sense of humour. Meditation and yoga are exceptional stress busters. Do some meditation to relax your mind. Try to have more self control in situations when you are expecting conflict. Develop the ability to listen and the temperament to disagree. Remember that ability to live with disagreement is very important in any relationship.
Stress disturbing your body and mind can be easily removed by practicing yoga and meditation. Breathe yoga is effective in instant re-energizing of your tired mind.
Less time on computers; realising work is only that - work, not your life; and plenty of calm meditation, thinking good thoughts for the world - yes, even for those you find it hard to like.