re: Poker & This might be a bad habit of mine....
I'm not much of a trounament player, since I mainly play the donk n'gos and the limit tables, but this seems to be like it could turn out to be counterproductive. Your goals should be different at different stages of the tournament, and they should also change depending of the situation. If you have a low M and are nowhere near the bubble, you'll look to double up, but if you're almost ITM and have some chips behind the average chipstack, you shouldn't be as inclined to take risks.
The opposite is also true. If you have a large chipstack, you should take advantage of the tightness that people develop near the bubble and get even richer before the tables break-up and you get to play with several other bigstacks. But I think joose's goal is spot on, when there's less than 2 tables worth of people (18 and less), you need at least 10% if you want to make it deeper. So I'd keep an eye for the bubble and monitor my M religiously, but thinking about how many chips I need right at the beginning to squeeze ITM, might as well play donk n' gos as was suggested.