~snip~
Self-discipline is key. It can be really hard, but the result is worth it. We are talking not about the profits, but about the knowledge, experience, and perception of the whole process.
I am not so sure that self discipline is key when it comes to gambling.
If a gambler keeps playing, they will eventually lose all their betting money.
That's just how the odds are. It doesn't matter if you lose it all in one night or over ten thousand nights.
Again, there should be a reason for why you gamble. For me, you are not losing this money, and it shouldn't be used as money to make a fortune to live in the days when you are old. You spend to feel the thrill of it, the odds, and to have a good time. You spend it for a service of sorts, where you can either win or lose, but you feel the thrill nonetheless, that's the main thing going about it. It's my opinion, of course, but if you gamble only to make a fortune, it's no wonder that the odds don't play in your favor. I do think the spirit of why you gamble and what's the reason behind it also matters.