The Warrior's Way says this about self-coaching (Much More at the Link):
" Sometimes, however, you may not like all the stimulation from below and rather coach yourself.
Instruct your belayer to be very attentive while you are climbing but to say nothing, unless it is a safety issue. Then, get on a climb at your limit and talk to yourself.
"Ok (Your Name), breathe, shake out, calm down. Where's the next pro/stance? Is the fall ok? What's possible in this next section?"
"Keep breathing; keep moving; loosen your grip; calm down, what's next?; make the move; commit; precise feet, etc"