[derick]

I'm not a really high stakes player. I play up to 600NL.

When I'm playing I don't think of it as money at all.

When I'm playing it's just points that are used to keep score.

You get immune to it after a while. But at first when you move up it takes a while to adjust.

Here's what I do when I move up.

Play only one table.
Play very short sessions.

Be ready to play your "A" game. (for me this means not playing tired)
After a short session, take time to analyze every hand you played.
Make notes. Write them down on paper.
If you are playing scared or playing poorly drop down in stakes 1 or 2 levels.
Repeat.