Fixing a Watch Writing an Essay
First, examine
the watch the idea
make some notes, if necessary and take
the watch the idea apart.
Spread the parts out and try to see how they work.
Clean the parts and look at the thoughts
Then carefully put them together in good order,
Be careful, be conscientious, and persevere:
Don’t give up until it’s done and then
when everything works as it should,
polish
the watch the writing
and set it going and read it over
and then step back and
admire your work.
–Dan Verner
Biscuit City 
Have been doing just that yesterday and today–but there's nothing there about throwing out the bad parts (no matter how attached you are to them) and replacing them with new ones. That's the hard part for me.