When a child has a task to do (take out the garbage, do his homework, set the table or whatever, resist the urge to remind and prompt and remind and nag and remind and remind! Such behavior on your part only teaches the child that he doesn't need to make the effort to remember or schedule his tasks since YOU are clearly so willing to carry those burdens. In reality, the more you forget about your child's responsibilities, the more he'll remember them. (Obviously, if he has a deficit in this area due to some mental health condition, get him the remedial help he needs.) When he fails to remember, set up consequences that he'll have to deal with. Let the consequences help sharpen his memory.
Friends & Family can sign up at www.dailyparentingposts.com