Kiko - when this happens to a player he can turn into a mouse. Every time he sees a flush draw he believes his opponent has other two in the suit that he needs. Every time he sees a flop of 2 3 6 he's convinced his opponent has 4 5.
This leads to three things.
a) Over betting in the belief that you have to bust them all out of the pot
now (meaning you rarely get paid off when you have good cards as everyone folds).
b) Folding to raises that you shouldn't and to players that you shouldn't.
c) Players sense that you are tight and weak (the worst combination) and bully you accordingly even when they hold 7 2.
The reason why this is such a tough one is that you have to be a good enough player to be aware that the flush, straight or set is possible whilst at the same time using all the other information at your disposal (player type, betting up to now, position, previous showdowns, pot odds, implied odds etc) in order to decide if to call, reraise or fold.
It's a difficult one as tight play is right - but weak play is disastrous. But be super aggressive when you believe you have the best hand and SOMETIMES mix it up by slow playing in order to get paid off big style.
Good luck Kiko.
.GIF)