1.) You can successfully ignore whatever the administrators tell you in those meetings on the first couple days of school.
2.) Almost every workshop you're forced to attend will be dull, insulting, or both. Try not to take it personally.
3.) A lot of people who've been teaching for decades are very wounded. Try not to judge them too harshly. You'll get wounds of your own.
4.) The wins you'll get along the way will be better than any other reward and will make it all worth it.
5.) There are a lot of different settings in which you can teach. Keep moving till you find the right one for you.