There is No Half-Way
Whenever you try to do anything, remember this - there is no half way point. You either accomplish your goal, or you don't. If you get half of what you wanted, you haven't accomplished your goal. The worst thing you can do is try to do something. You either do it, or you don't (sound familiar).
I hear people complaining a lot. Whenever they fail at something, others try to console the failures by saying things such as "you got part of it", "you tried your best", "maybe next time", etc. That is bad. It gives the person the wrong feeling. It makes him feel better when he should instead feel that he should do better.
Don't take this too literally, however. This is more of a way of thinking than a strict rule. If you see that you're going to inevitably fail to obtain the whole thing, go for half, a quarter, or however much you can get.
Unfortunately, our schools are indoctrinating our children with values and ethics that will make them all panzies when they grow up. This value is not one of them. I wonder how pathetic our society will become because of this...