True, one can get addicted to anything he/she is having fun with, and gambling is far from being exception to this rule. The key is to spot the moment when your fun turns into addiction. It's not so hard to spot that moment, if by the "moment" we mean a period of time, which is several days long.
If you are having fun with something, you feel good afterwards, full of energy and strength to do many things, things you have to do for work etc. But there is little fun in being addicted. You are constantly nervous, playing much more than you should each day, feeling exhausted afterwards etc. That's how you know that you are not having fun with something, but rather becoming addicted to it. And the earlier you interrupt this downward spiral, the better
That makes an interesting point
The moment you refer to (being constantly nervous, playing much more than you should, feeling exhausted afterwards, etc) is the one where you can judge whether you are in fact prone to this particular form of addiction. And the interesting part is that if some time "afterwards", i.e. after you have recuperated a little, you feel inclined to continue with your activity, that might be an addiction (and this is where you should stop and think). But if you don't, then it is not and you don't have to do anything
I disagree. Defining what addiction or knowing how to know if you are addicted to gambling (or to anything) is not always when you are "being constantly nervous, playing much more than you should, feeling exhausted afterwards" sometimes you also feel dull when you are addicted in gambling, what I mean is too much addiction makes you lose your self, for example, when you lost your capital, you deposit again, then you win, afterwards you felt happy and gamble again, it repeats (you lose again) but it change, you deposited again and lost in a row,
and that is when addiction kick in, you are not yourself but continuously betting in gambling, playing dice or poker, and you doesn't even care what would the result be, it is like you are throwing your life away.