“Use words sparingly, as if you were planning a garden
one seed at a time.”
-Stephen Wilbers, author
Keys to Great Writing
You can boil down a lot of writing problems to two things:
1. Wrong words.
2. Too many words.
If you take care of the second problem, a lot of the first problem goes away.
That’s why some say edit ruthlessly, which means, among other things, cut, cut and cut some more. And if you can follow Wilber’s advice (in the above quote), you’ll have even fewer words to cut at the editing stage.
Neil Sagebiel 
A good advice is:
write something, and then remove half of the words