Remember, don't try to build the greatest wall that's ever been built. Focus on laying a single, expertly-placed brick. Then keep doing that, every day.
You don’t try to build a wall, you don’t set out to build a wall. You don’t say ‘I’m going to build the biggest, baddest, greatest wall that’s ever been built.’ You don’t start there… You say ‘I’m going to lay this brick as perfectly as a brick can be laid.’ And you do that every single day and soon you have a wall.
I do not have to build a perfect wall today. I just have to lay a perfect brick.