Muscle memory and repetition - when a sound comes out that you like you can think “what specifically was I doing differently to get that sound?” What was I thinking at that moment? Then repeat the thought that makes your singing improve and sound better. Tell your body to tell your brain what to do and then your singing becomes automatic. Once your technique becomes automatic, you can stop worrying about how your singing sounds and start to focus on other, more creative, performance aspects of your singing.
Focus points/triggers - these are the specific thoughts that we can think in order to hear improvement in our singing and develop that muscle memory.