Sometimes I look back at what I have accomplished and I think I only did 10% of what I set out to do.
For the most part, it was the 10% that mattered, though.
A reorientation thought: be prepared to shed 90% of goals in service of reaching the 10% that matters.
My standard operating procedure has been to overcommit, then fail to accomplish everything I overcommitted to.
Reorientation: fewer commitments, frequent pruning and discarding.