[Black winter day]

I personally do the same thing as OP and i don't think it's a leak.
If i quit being up decent amount of money, i feel good, pleased with the result obviously and the next session i am feeling confident and play well.

If i stay and win a little more, that wouldn't make such a difference.But if i lose, i feel agitated and start blaming myself that i didn't leave when i wanted to.It seems like every time i stay "to bust that fish, cause it's a shame to waste this opportunity", i double someone else up and meanwhile fish loses his stack to other players, leave and i play for another 4 hours just trying to making it back to where i was.


I also found out that i start to play a little scared wanting to keep that win (in subconsciousness, perhaps, but it still exists) so i end up losing a lot more frequently than winning.

Also, i play deep stacked poker much worse that the standard 100-150BB poker, cause my style of play is TAG, not LAG and i don't feel comfortable felting for like 250BB without the nuts.

All those reasons is why i leave when i am up an amount that satisfies me.Is it a leak?
It would be if i kept playing the same game after being up a lot.
Since i play worse because of the factors i mentioned, i think, setting a stop win is a good thing.