Perfectionism

Some, of modest ability, publish too much; others, of greater ability, are stymied by perfectionism.

Perfectionism is a curse!

Leave perfection to the gods. The most that can be asked of a mortal is that he strive for excellence within the limits of time, talent, and circumstance. Striving is not achieving, and excellence is not perfection.

You will never get to the point where you have read all the literature on a topic, even a well-defined one. Some of the material is out of print or otherwise unavailable, some of it is in foreign languages. Should you hold off on writing something about mereology until you can read Polish?

Too much reading blocks the channels of one's own creativity. Forever reading, never read. 

Writing is the best way of working out your ideas; so if you wait until you know exactly what you want to say before writing, you will miss the best way of determining exactly what you want to say.