When you're involved in a pot and the villain donk bets into you trying to rep something (straight / flush) keep in mind what cards you're holding.

I mean more than "I've got a pair of 8s". What suits are they?

On a 5 6 9 flop with a two flush, the odds of someone having a made hand (78) is drastically reduced if you're holding 2 of the eights.

In PLO understanding blockers is even more important because of all the possible backdoor combinations.