I have this problem, too. I'm a 20 year old poor college student just trying to make a living. So it's never comfortable when moving up stakes (I recently moved up from 25NL to 50NL as well), because even if my bankroll gets to $2000 (which it is), I still feel nervous betting $10, $20, $50 at one time, because I'm not used to having/seeing a lot of money. But now that I've practiced quite a bit at that level, I'm getting more used to it. For low variance I'd say play quite tight at first, try not to make any spectacular bluffs or questionable calls, and you might wanna try full ring.

I think the key is 1) make yourself think that the your poker bankroll is different from your actual spending money, so you don't have a problem risking "poker money" rather than "rent money", and 2) experience

You can move down to $25, and maybe throw in a $50 table in there as well...and gradually ease your way into it.