I was gonna say relax.Stop thinking so much and become a looser human being in general.
If you have even decent technique you don't need to grip the stick that tightly to play hard, produce a desired volume and still maintain control. When I drop either stick it's because I'm too loose and not paying attention.
Perhaps on a related topic, I had a trio gig last week with acoustic piano and upright bass in a live room and almost hurt myself having to play so quietly. I think that takes even more technique than playing loosely and letting it go.