Whenever you write anything, make it your best. Review your words and mull over them. You don’t need to do this in all of your conversation or memorandum. But, when you craft an idea with words, use that as exercise. It will keep you from falling into the trap of thinking that you’re better than others, merely because you have a fat vocabulary.
You can view words as a way to always grow or as a way to dominate. Don’t fall for the trap of superiority. Just always learn to express yourself. Then, you’ll slice through difficult situations with ease.