The harder part is not starting, if you feel like you are not cut for gambling and you are gonna have hard time stopping than you should not even start. That not starting for wrong people is the true issue, they don't know what type of people they are and they gamble and fail to stop at the correct time. Learn to not start whenever you want before learning how to stop.
Curiosity kills the cat that is what they say. The only thing that a person could do wrong is to start gambling because of others people influence, because he heard in the news that a certain person have won a big amount of fiat in gambling so he decided to give it a shot, believing he could also win something big like that. Being positive about things in life is not bad, but we have to make exceptions, and gambling is one of the things we shouldn't even try.
Gambling is so gamble, meaning you are risking something to get something, and that is money, you are risking money to get more money. The chances of winning in gambling depends on what game you are playing, for example you are playing lottery which the chances of winning is 1 out of 175 million.
read more here: https://www.huffingtonpost.com/ronald-l-wasserstein/chances-of-winning-powerball-lottery_b_3288129.html