Procrastination - putting off what you really should be doing - until later.
If you're not familiar with wikis, I encourage you to go to this one, which includes a very comprehensive discussion and "how-to" section on overcoming and eliminating procrastination.
"One would think that the solution to procrastination (not doing it) is its exact opposite: doing it! That the cure is doing the very thing it is that is being avoided. Well it is, and then some. Since procrastination is the cause of not doing (rather than merely the lack of action), simply doing that which is being procrastinated may not be psychologically possible while the mental obstacle or technical problem causing the procrastination is in place."
BOTTOMLINE: "In essence, procrastination is a form of incompetence. To cure it is to eliminate it. Since incompetence is the opposite or lack of competence, the only way to eliminate it is to replace it with competence." Just DO It.