The advice we give others is the advice that we ourselves need. Since it is too late for me to learn these lessons, I will discharge my unfulfilled duty by dishing them out to you. They will be stated in order of increasing controversiality. Lecturing Blackboard Technique Publish the same results several times. You are more likely to be remembered by your expository work.
Every mathematician has only a few tricks.
Do not worry about your mistakes. Use the Feynmann method. Give lavish acknowledgments. Be prepared for old age. The following four requirements of a good lecture do not seem to be altogether obvious, judging from the mathematics lectures I have been listening to for the past forty-six years.