There's no consequences

"Okay, that sounds great. But I'm not even entirely worried about monkey's paw stuff. Last summer, Buffy ended up running away from him because of, well I'll be honest, it was a bunch of crap including friends dying. And while she was gone it sucked for us. But while she was gone she also saved a bunch of people who were being used as slaves in a demon dimension where time moved faster than here. And if she didn't run away then those people are screwed."

"Oh, that's so noble that you're concerned about them."

"And I don't want to wreck my friends lives to make myself a big shot."

"I'm fairly certain that a wish that left you successful, but emotionally unhappy wouldn't qualify as in your favor. But if you make a wish that doesn't work out for you the way you want it to then you can make other wishes to correct it, and wishing you'd never made the wish will definitely work right. And your memories will never be overwritten unless you wish them to."

"So basically, I can experiment, can't I?

"With no problems."