As a pianist, I went the usual method of practice taught by my two Julliard graduate instructors.
Over the years playing bass, I applied those methods, but two situations would occur that all that didn't seem to cover:
I made FAR more progress playing 5 hour gigs night after night than practicing alone for 5 hours, no question.
If I had something that was REALLY challenging, I'd work it to death but never quite get it under my hands reliably. IF I'd walk away from it, a week or ten days later, just for grins I'd try it and NAIL it without even thinking about it., and never have the slightest problem with it ever again.
I never completely understood why these two were proved true to me many times.
Over the years playing bass, I applied those methods, but two situations would occur that all that didn't seem to cover:
I made FAR more progress playing 5 hour gigs night after night than practicing alone for 5 hours, no question.
If I had something that was REALLY challenging, I'd work it to death but never quite get it under my hands reliably. IF I'd walk away from it, a week or ten days later, just for grins I'd try it and NAIL it without even thinking about it., and never have the slightest problem with it ever again.
I never completely understood why these two were proved true to me many times.