Don't get bent out of shape if you don't always win or otherwise play up to par. The whole point is to enjoy yourself and forget your everyday worries. Families can be as source of support, an oasis away from the everyday pressures or sometimes it's only a place to grab a few hours sleep and get back in the rat race. Your children, spouse, family members, in-laws can be a source of irritation at times. A person's home should indeed be a place to rest and relax.
Many people find it helpful unwind by sharing the day's events with their loved ones.
Holding things back, keeping it inside yourself, almost always does more harm than good and can affect not only your well-being but everyone else in your family as well. Talking things over is a great way to get rid of built up stress that many people overlook. You should also be a good listener. Don't unload your problems and have no time for your mate's or children's problems. They may seem trivial to you, but they are real problems that need solving just like yours.