Listen to your wife. They usually see things accurately.

There are two ways a brain can go too fast. One is anxiety. The beta blockers can help with this. The other is a ADD/ADHD like personality. Being overly connected to every event and feeling the need to respond to every little thing can be taxing on your brain plus it can be taxing on those around you.

Have you stopped all caffeine?

Does anybody ever complain that when you talk, you tend to say too much and too fast for others to follow and understand?