lol well said. But I don't always think like that. Sometimes and cant help it, I get greedy because I want to make money faster. But I do try and manage my bankroll, but sometimes my greediness gets in my way.
That sometimes will wipe out your bankroll again and again until you stop it.
If you're just playing for fun, play as high as you want but expect to lose your deposit repeatedly.
If you want to make some money out of this, like your 10k goal, then you've got to understand that one of the biggest BR killers is poor BRM. You'll notice that most threads people start about going bust tend to start with "I was playing above my limit" or "I went on tilt", this stuff happens because we're all human and sometimes we let out impatience, arrogance or frustration get the better of us, but it will wipe out your roll.
If you play above your limit once you'll probably be fine (assuming you're actually good enough to be in that game), in fact, you'll probably make money. The problem is that your risk of ruin goes way up along with it, there is a lot of variance in poker (even if you've got a huge edge in your game) and this will catch up with you.
Play above your BR for long enough and you'll lose it, how long depends on how far above your BR you are. For long term success, the kind that you need to get to 10k, you need to stay within at least 20 max buy ins (probably more). It's not something that's negotiable, it's just solid math.
