I talk to myself almost daily. This is very beneficial. I am not an introvert, neither am I "mental". There's always some debate or presentation going on. Sometimes I'm singing in front of a 50k-person audience. Doing this actually makes me super-confident in real life. I basically simulate "stage-fright", as well as rebuttals to common arguments; and in real-life, I have no stage freight, and I have great rebuttals!
I call this "pre-stressing". Similar to how concerete is pre-stressed. "It is substantially prestressed during production, in a manner that strengthens it against tensile forces which will exist when in service.". See https://en.wikipedia.org/wiki/Prestressed_concrete.
I call this "pre-stressing". Similar to how concerete is pre-stressed. "It is substantially prestressed during production, in a manner that strengthens it against tensile forces which will exist when in service.". See https://en.wikipedia.org/wiki/Prestressed_concrete.