Here is a thought experiment: take the last seven days (what the hell, take the whole of last month) and pick the best day of this period, i.e. the one day when things happened just the way you wanted them to, when nothing caused you to want to tear out your hair one follicle at a time, when you didn't feel anger, frustration or any other negative emotion. The only catch is that you should not pick a day when a pretty rare event that gives you great happiness occurs (a day when your long-held dream came to fruition, for example).

What if you could wave a magic wand, and each day of the rest of your life would be filled with only the things that you did on this 'perfect' day? Would you be happy and contented with this? Or would you say no to this and prefer to take each day as it occurs, with its share of negative emotions, just to leave open the possibility of something truly joyful happening?