Start and finish
Start. Go wide, be creative, let your imagination run wild! Finish. Go narrow, put your head down, cut the useless mercilessly out.
Both are fundamental modes of work.
If you only start, you never achieve any significant results.
If you only finish, you always run out of creative ideas fast and get stuck.
We have our preferences, so work on the weak side.
Oscillate between the two like a master.