Balance Problems

I lose my balance hundreds of times per day while I stand.

First, my toes rise, then the balls of my feet as I start falling backward. Then I curl my toes and drive them into the floor while pulling my body forward using my back muscles to right myself. Yes, when I'm standing, this entire process happens probably about ten times per minute. It's exhausting. It overworks my body and gives me pain. It distracts me from everything. It's unnerving to constantly feel myself falling.