When Your Fund Strategy Breaks

I think the question that addresses that is the question of, at which point does my investment strategy break? I think one downfall that some GPs experience is, let's say

they're in a size-contrain fund and they have a couple of good deals and the founders come back and they tell them, "Oh, I wish you could have led my next round, right? I really like you." And so then they start thinking like, "Oh, I just need to have bigger fun and I can ride more checks

and bigger size check." But what they might not realize is the reason why they got into some of the good deals is because