Degrees of tilt in poker
There are different degrees and varieties of 'tilt'. Some players have the misconception that going on tilt means going all-in with any old hand pre-flop after taking a bad beat, just to vent your frustration. Although you may see this occasionally happen at the table, there are many more subtle forms of tilt that should not be ignored if you want to improve your game.
Tilting is not always simply moving all-in on a random hand due to frustartion from a bad beat.
Every time you enter a pot with an opponent because you are looking to even the score with them because of the way they previously outplayed you or lucked out, you are going on tilt. You may elect to play more pots with a certain person in an attempt to outplay them on following streets, possibly because they had taken some of your money in an earlier hand.
Every time you do this you are effectively on tilt, because you have to ask the question: "Would I be playing so many hands against this person if I had no problem with them?" Furthermore, you are unnecessarily risking more of your money if you constantly try and outplay them with the worst hand. Always remember that in poker that you are looking to win money, and not pots.