I recently decided to get back into pool after about a 7 year break. I have no desire to get back into league at this point but if I did I would do BCA over APA, just better caliber players IMHO. Anyway, after 7 years I was rusty so I hit the practice tables. I started to drill and got bored and started shooting racks. I decided to get into some cheap tournaments ($5 - $10) to get some "easy money".
To my disappointment the money wasn't "easy" and I was donating. Frustrated at my game I decided to evaluate myself. I discovered I was playing my opponent and not the table which caused me to stoop to their level and playing their game and not mine. I noticed my stroke all out of whack, not staying down, death grip on the cue on some shots, rushing shots, poking shots, etc, I was doing it all.
I decided to quit the tournaments and get my head right, back to the practice tables. First stroke drills, 2000 shots corner to corner and then 500 shots length of table having cue ball come back to tip. Then ball pocketing drills, long rail, short rail, cut shots etc. Not playing any games, running any racks or entering any tournaments until drills are completed.
I have set a period of 1 month of drilling 2 - 3 times a week for 4 - 5 hours before entering any tournaments. I have 2 weeks left and have noticed a huge difference in my stroke!!! I will get into the lower tournaments with the "bums" as some call them and when I start winning each one then go up to the next level and start winning those.
Bottom line is that winning tournaments and money, big or small, builds confidence in your game as well as your ability to win. Everyone on this thread has to admit that drilling is not fun but it does pay off and if your game is off you need to get back to the basics which means drill, drill, drill, and when you are tired of drilling, drill some more. Enter back into the "bum" tournaments and win them, move up until you feel confident entering in the $50 to $100 dollar tournaments and you will be surprised at where you place.
Don't get frustrated and don't quit, simply step back and re-evaluate your game, fix what is broke then hit it hard again at the bottom and work your way to the top.
Good luck!!!!