To start with, here's a deceptive trap we fell into early in our careers:
The Card-Stacker is a writer who builds his narrative very tightly, very delicately, and with every piece arranged in carefully balanced coordination. That doesn't sound so bad, right? It didn't sound bad to us either.
What we discovered is that, come time to make the inevitable rewrites, changing anything would result in the whole House-of-Cards falling down. The smallest addition or subtraction would result in an avalanche of changes, a chain-reaction of consequences. It was so precarious it had lost all flexibility.
These overworked ideas were like lines of Christmas tree lights: If one bulb was removed, all the other bulbs would die.
Each beat relied so heavily on the one that preceded it, that should one be changed - ten more needed drastic alteration. Scenes defied length adjustment, the smallest of characters were entangled in plot, and all optional details had somehow become inextricable.
We had to learn to under-plan some things, to not be afraid to have non-vital elements and that simplicity meant stability. While in some ways it was good writing, like most things in life it was a matter of finding balance.