Maturity
Maturity: the ability to do a job without being supervised (Dear Abby advice column)
One of the purposes of apprenticeships and internships is to help a worker learn his task well enough to do it alone without supervision. Childhood is like that, too. Children can’t do much by themselves until they’ve been shown how and given adequate practice. We need to train, teach, and give ample time for practice before we commit responsibility to learners.
Let perseverance finish its work so that you may be mature and complete, not lacking anything. (James 1:4)