First off, you are in the same boat as a million other guys, or maybe 100 million, who have had the pool dream, and really wanted to make it work, past and present.
You had the guys 40 dollars and a chance to win more {maybe, most people do not carry large sums of cash any more} you had to go to work the next morning, so you gave it back, {gave him a chance, he won}.
Here are the scenarios as I have seen them over the last 50 plus years.
1. You get craphouse lucky and run into someone like Dippy Dave , Airplane Man , Stutter man , and win a small fortune in a short time.{ You don't have to be a champion to beat some of these guys , just be the right guy at the right time} most of the guys who won lots of money off Stutter Man were C and then became B players.{several of these people lives were devastated later , karma?}
2. You travel around like Jack Cooney or Alphie Taylor and get next to suckers all over the country and win whatever they are willing to lose
3. You are like the majority of players and you find out your true speed and how to clock other players and you pick your opponents and work up the ladder , you enhance this by practicing and improving faster than they can keep up with and always being a step ahead.
You can make money like this , but it's never going to be much for one major reason, it's called "winning heat".
If you keep beating people you aren't supposed to, pretty soon , no one is going to want to mess with you because you already beat some guy they are scared to mess with!
Then if you do beat someone , you have to have an armed entourage with you sometimes to get out with it, or to get out of the parking lot without having a gun put to your head.
I have tallked to hundreds and hundreds of players who were shortstop to champion speed, allmost all of them who made pool their life , told me they wished they never saw a pool table.
Is that how you would like your dream to end?
Work your job , enjoy your life , play pool for what you can afford and become the best you can be, and don't lust after things you don't really understand, {and won't until it's too late} and that's the best advice I can give.
One last thing, if you had won all that guys money , say 2 hundred dollars and his little wife came in with a couple of little kids crying that she didn't have any money for diapers or food , could you keep it?
Thats the truth about most of the money you will ever win , it was taken from somebody elses mouth!
Lots of people justify it by saying, if I didn't take it , someone else would have!
The heat is still on you, and no amount of justifying or self deluding can take it away.
For those who could keep the money and think it was ok , your reward awaits you.
I have worn these shoes and walked a million miles in them , now I have to spend the rest of my life , trying to make up for it.
Not for someone else ,but because I know it's the right thing to do.