I had enough of only losing in slot machines so I decided to try poker and never look back, in here the level of patience it is all what is needed, now I deposited some money and spend like 20 dollars playing slot machines and it is the same story there, you eventually lose money without releasing a lot of time have passed by. In poker at least you are in control and it takes some very very bad decisions to make you lose everything, in here patience is key and playing in lower bet tables to learn and get experience is my advice to people wanting to get better at poker, also at the same time they want to quit playing slot machines or other addictive games which really hurts you badly if you are persistent in them. I still have not won a lot in poker but it looks I am getting better at it every day.
On my end, enough for me is the extra money that I can allocate for my gambling session. Because if you won't use your extra funds, you will surely have some problem one way or another. So enough is quite subjective as it depends on the financial capability of the gambler for a certain given time.
Hence, enough is the spare funds that you can willingly lose in a specific gambling session. So it may vary from time to time depending on your financial status. You are lucky if you don't need to count the money before you start to play. And not many gamblers can afford such lifestyle. Also, don't compare your amount of bets to others because you will surely be disappointed.