Racket Handling as a skill.
Become comfortable to utilize your racket as the extension of yourself as opposed to an object you carry around.
The handle is well designed for your handling comfort. Learn to use the bevels as your guide to placement of your racket into your palm.
The bevels will guide your racket placement as you switch between grips. Your resting grip should differ from your forehand and backhand grips and as such enables you to realize when discomfort arises during execution of your tennis shots.