Avoid cliches like the plague. Go around the barn at high noon to avoid colloquialisms. Analogies in writing are like feathers on a snake. I always try to do things in chronological order. A plateau is the highest form of flattery.
Exaggeration is a billion times worse than understatement.
It's Deja Vu all over again. If we do not succeed, we run the risk of failure. The shortest distance between two points is how far apart they are. Don't be redundant by repeating yourself. When all is said and done, much more is said than done.