If you don't have a trumpet teacher, a voice teacher may do.....
What are good lessons? What do we expect from the seasoned professional TEACHER?
Well, from my side of the issue (I have had great teachers almost my entire playing career - even now!), we expect RESULTS and they don't come from talking or reading. They come from common sense doing. I expect the teacher to set up a couple of logical, monitored daily programs: one for maintenance and one for getting better. I expect continual critical analysis of my playing, rhythm, articulation, expression, consistency of musical judgement.
I do NOT expect the teacher to be the motivational instance in my trumpet life, I do not expect the teacher to be the reason for a guilty conscience.
You should all understand that I do not believe that we are all equal and have an equal chance. As a matter of fact, let me go on record as saying that only a few have a snowballs chance in hell of becoming virtuosos. The sooner that we realize who and what we are, the sooner we can turn our experience into FUN at a reasonably advanced level! If life is not good to you by giving you a top player and pedagoge as a teacher, then you better consider plan B. Without proper help or opportunity, the possibilities are limited. In the old days, really good players could get into the military band program and with enough drive, succeed. Those days are gone. You are what you repeatedly do. Excuses are also something that we do. Make opportunities or be content with whatever is left over!