It is impossible to change people's habits, traits, or mindset.

Don't presume to give advice to those who are more experienced.

It is more worthwhile to teach someone to do something (for themselves) than to do it for them (on an ongoing basis).

A person who teaches, especially one employed in a school. / The index finger; the forefinger. / An indication; a lesson.

Capable of being taught; apt to learn. / Willing to receive instruction or to learn; docile. / That can be taught. / Facilitating teaching; instructive.

(idiomatic) A student who is perceived to be favored by the teacher.

plural of teacher

(Britain, parts of Canada) A teacher who fills a temporary position in a school on a short-term basis; often supplied by an agency.

(archaic) third-person singular simple present indicative form of teach

The position or role of a teacher.