[1] https://www.amazon.com/Zen-Art-Archery-Eugen-Herrigel/dp/037...
Intense competitive athletics is certainly conducive to focus that is likely similar to meditation. One book that I found somehow helpful or comforting was http://www.amazon.com/Zen-Art-Archery-Eugen-Herrigel/dp/0375.... I found myself following similar practices, by which I mean I would approach the barbell, get set up, and then wait until my body spontaneously performs the lift.
The other concept indicated in the last paragraph on "results tank" not "effort tank" is lust of result. There aren't as many sources discussing this topic directly, but Zen in the Art of Archery [2] is good, as is Watts' Way of Zen [3].
I highly recommend them all for anyone interested in creating things.
[0] http://www.amazon.com/Tao-Watercourse-Way-Alan-Watts/dp/0394...
[1] http://en.wikipedia.org/wiki/Wu_wei
[2] http://www.amazon.com/Zen-Art-Archery-Eugen-Herrigel/dp/0375...
[3] http://www.amazon.com/Way-Zen-Alan-W-Watts/dp/0375705104
This happened to me in golf. I was naturally decent at it without ever taking a lesson or watching a video about how to swing. That only got me so far. Now I'm taking lessons and relearning everything. I feel worse at the sport today than I was two years ago. But if I acknowledge the truth in that and push forward, I'll ultimately be much better than I could have been.
Same process with meditation. I've been practicing for 11+ years and right now my practice is pretty challenging. But that comes with the process.
[1] https://www.amazon.com/Zen-Art-Archery-Eugen-Herrigel/dp/037...