On one hand, if you're scared, dont do it. On the other, give it a shot sometime. I've only been scared once, the first time I tried 100nl. Next day I was over it. I wasnt even really thinking anything in particular. Not like I was literally thinking "oh wow, this is a steak dinner" or "crap, better fold this is real money", I just felt nervous. Next day nothing, couldnt care less. So dont play with scared money, but take shots occassionally. Heres what I'd do. Before loading 25nl tables, look for a couple of really good 50nl tables. If you find a couple play on them with 1/2 the number tables you would 25nl. If you dont, just go load up your normal 25nl tables. The incentive of having a really soft table and more time to think should help.