The more you practice, the better. But in any case, practice more than you play.
As your golf improves, your concentration will improve with it.
I expect to play golf until I am 90-even longer if anybody figures out a way to swing a club from a rocking chair.
If you win through bad sportsmanship that's no real victory.
There are no shortcuts to good golf. The better players realize this.
You can't win them all but you can try.