We never know where the teacher will appear or what the lesson will be but when they arrive...take the lesson and share.
a few lessons I have repeated: Trust all feelings, accept things sooner, when the feelings hits, step back.
We are all teachers and students. No one is ahead and no one is behind. No matter how good you try to live, try to help and share, someone will take it as bad. Think about, talk about if you can, listen to understand, not to respond or defend.
Accept, learn and move forward. There is always some truth in everything you hear how will you respond to it...the lesson.