I am willing to act in spite of my fear.

Stage fright doesn't leave professionals. Actors with forty years behind them still shake in the wings, and some are sick before every opening night. Then they walk out and do it properly.

The fear was never the thing standing between them and the stage. Willingness was, and willingness is a separate faculty that doesn't require calm in order to operate.

This is good news if you have been waiting to stop being afraid before starting. That wait has no end date. The action can be taken with the fear fully present and the hands unsteady, which is exactly how the professionals take it.