This isn't discussed much, anyone have any mental exercises (away from pool) perhaps some type meditation, or game, like chess maybe ... anything anyone has used that has been helpful developing concentration and focus?
There is a lot of material from sports on the mental side. Just google it. Some of it may help but there is only one thing that will absolutely, positively help. I know it's a dirty word to many players and it's always something they mean to do.... it's called PRACTICE. Sorry for yelling so loud.
The saying is true. You can only play what you practice.
Set up a practice time. Organize your practice. Know what you are going to practice and what you want the end result to be.
For example, you play one pocket and are missing the spot shot. Start in the kitchen BIH
1st goal: making it 10 times in a row at whatever a comfortable speed is for you. Center ball cue ball
2nd goal: making it 10 times in a row using tops with comfortable speed
3rd goal: making it 10 times in a row using bottom english with comfortable speed
4th goal: making it 10 times in a row, left spin, right spin
5th goal: making it 10 times in a row and try to hit it so slow the cue ball doesn't hit the end rail
etc. etc. etc.
Don't try to do it all in one practice. Work as hard as you can for as long as you can.
When you find that you aren't working, force yourself to work for 10 more tries and call it a day for that practice session. Beyond that, all you are practicing is how NOT to concentrate and focus.
As you practice, you will notice that your sessions will get longer. Your focus and concentration will continue to get extended. Push for a two hour session in full concentration. Take a 1/2 break and continue.
I know it sounds dreadful, but if you are serious and really do want it. It works. Just hitting balls without a plan does not work.
Many players can't figure out what to practice. It's real easy. Practice the shot(s) that you lost on/missed/couldn't figure out. Figure out what you should have done. Figure out your highest % of completion whether that's making the shot or playing the safety. Chart the shots, chart your progress and keep track of your practice time. It helps with the confidence and shows you how you are improving
There are tons of good drills all over the internet. I promise if you complete those that are available. You will be a good player.
Plan the practice. Do the practice. Everything else will take care of itself.
I can't tell you the number of students I get that somehow think they can become a great player just by playing games. Won't happen. Practice is the key for confidence, control, concentration and focus.
Good luck. Hope it helps.