That also is very true? Yet here's the problem with that Case, what if your on an Aggressive Table? That call most things down light? Then what?
Then that K2o might not be as bad as you thought.
Also, pay attention to your table image.
At a live game, don't play a lot of hands. Then when you do play a hand (say you decide to play 74o) in position, you raise and get a couple calls, the other players think you're tight. The flop comes a bunch of mid cards but miss you, say you pick up a gutshot straight draw. Bet it like you have top pair and you're trying to protect, or an overpair. If you get raised, think long and hard (act like you're thinking, your decision may be already made up...) Also just because you are raised by a loose aggro person doesn't mean you're behind. It could be the player is
bluffing and has you on a hand like AK that missed. You could always re-raise to see if you can get him to lay down, but 3-betting with air doesn't work against pot commited opponents, nor does it work on opponents that haven't noticed you haven't played many hands lately, not does it work against opponents that connect big with the flop, or have the hand you represent.
Online, if you get raised, take your time and act like you believe your opponent even if they caught you bluffing. Instead of showing your cards, muck them. If you get check/called on various streets, that's tough, because that can put you in a spot. I like barreling my bluffs but I get confused when I get floated by an unkown.