For me I've used the Money Management spreedsheet lying around here somewhere and edited it for my own needs. Basically it goes like this:

First few pages are used as my BR "rules". No-Limit, Limit, MTTs, SnGs. My rules could be considered tight in that I've also split it up into Micro, Small, Medium, Large and High-Stakes. Each jump makes my minimum BR 2x as much as it was before (if not more).

Then I keep major notes on how I'm playing. I play anything from 3 to 8 sessions a day depending on how long each session I play is. At the end of the month I know exactly how much I've made (or lost) on any game I play. For example I'll have my profits to LHE seperated from my profits in NL or PLO (if I played it).

Then I take out half my profits above X at the end of every month. X is a random amount that you feel is worthy of being withdrawn. I then split X in half, putting half into a long-term savings and half to be used as or when I want.

Long and drawn out but I'm planning for my future as well as my present.