Question for experienced players

[Random678]

I would like to now, after how many hands (online) of winning play, you can say to yourself with cnfidence, that you indeed are a winning plyer and that this is not just a good run. Also, how many hands of winning play do you need, to see what is your truely win rate per hand. Of course, this question is for players who had playe over couple of 100k hands online. Thank you very much...