I worked for a while as a teaching assistant while I was struggling. I really enjoyed it, working with kids with special needs, autism. It takes a hell of a lot of concentration, and you've got to focus on the child properly for seven hours a day.
A truly strong person does not need the approval of others any more than a lion needs the approval of sheep.
If you laugh, you think, and you cry, that's a full day. That's a heck of a day. You do that seven days a week, you're going to have something special.
It is the supreme art of the teacher to awaken joy in creative expression and knowledge.