Some lawyers get it immediately: It's the fear that their best work is behind them that is keeping them from doing their best work. They embrace or lean into the fear, admit they were stuck and not at all doing their best work, and then their talent is freed up again.
The best book they can read when in the miserable state of fear, along with a heavy side portion of self doubt, is "When Things Fall Apart." It's by American Buddhist Nun Pema Chodron. She writes from experience. One of the worst is when she assumed she had lost her ability to enlighten. Up to then that was the glue that held her together. The worst of that, she confesses, is the uncertainty. No one knows if the blocked state will end and what will be on the other side.