How many hands before you are confident of your win rate?

Hello

I just wondered what people consider a good sample is for determining your success?

A favourite quote on here is obviously 'sample size to small'

Im a little embarrassed to admit that I win 0.8BB/100 over a sample of 130,000 at 5/10 which is pretty weak given the quality of players on here (and their winrates) but I'm happy that im learning and improving.

I guess its kind of a reassurance thing (coz Im that kind of guy) but is 130,000 hands enough for me to be able to relax in the knowledge that I am a winning player?

Thanks in advance...