To learn you have to listen, to improve you have to try!
Do not allow mediocrity to define your destiny. Get up, focus, pay attention and then implement what you learned. Next, teach others, as long as it’s in decency and in order. It’s not complicated. If they don’t or won’t listen, you can’t say that you didn’t try, and neither can they. Move on because there is someone else who needs your guidance and encouragement.