Many words go with self—self-awareness, self-control, self-improvement, self-criticism, and self-cultivation, and so one.
We become aware of ourselves by using our inner speech and talking to ourselves.
We can internalize the inner speech by putting it out loud and touching the sound of it.
The essence of self-cultivation is to internalize words by moving in and out of the inner speech.
Cultivate yourself by externalizing and internalizing words through inner speech.