Another thing I do is remember that I am indeed allowed to raise the other bets .... instead of "being polite" and not bet when I have "rags." Rather, I think to myself, "if you guys/gals want to see my hand, you'll have to pay for it," then bet at least 3 or 4 times the blind or 1/3 to 1/2 the pot.
There are other factors to explore as well. The "bullies" or careless chip wasters often just raise and reraise to force you to fold. This translates to they can be "baited." So, I'll put in the minimum bet with a quality hand. If the "board" gives me a strong flop, I just keep checking or putting in a minimum bet to entice them into their fray type play (we call it "slow playing").
And, if your gut tells
you someone has the cards to beat you, e.g., a higher flush or straight or higher full house ... then fold and save your chips ("folding is only a small mistake" a pro once said at the final table) [smile]. So many of them let their egos blind them to the truth that "if wishes were horses, then beggars would ride." ('Tis one of the reasons some folks try to get your goat, so you'd lose focus.)
Further, I agree with the others ... most of all take your time with each hand.