content: Well first of all, don't try to do 4 hours. Try small goals; Sit for 10 minutes regularly. Try to keep your mind clear of thoughts about your chores. For some people it helps to focus on breathing, but it can be detrimental (don't count sheep, you are not trying to fall asleep). After that becomes easy for you, you can start to increase the time. But 4 hours is really ambitious and what that guy is doing is a lot harder than most people around here think.