This is a To Do list that matches many people who stay infront of a computer for the whole day. "Playing Solitaire" can be changed with what ever the game you play so that it can exactly match you. At the end of the day if you think a bit, you'll recognize that you haven't done anything valuable but just wasted the day.
If you are one of those, it's time to change the list and add something important to the list.
But this do not apply to all of you.