being more assertive about what I will or will not do/accept/etc. is a part of me that I'm working on. However, have to be careful as sometimes I come across as aggressive, to an extent this led me down the NMO path.
That's a fine line you're going to walk doing that. Especially if any of that comes in the form of an ultimatum.
While I fully believe in the LBS standing up for themselves...in many ways. Any ultimatum you issue you will have to live with the consequences of it. And the results are usually not what you want them to be.
Be careful.
I'm going to suggest that you read some of the threads that Cadet provided above BEFORE you go down that road.
Experience is a brutal teacher, but you learn. My God, do you learn. - C.S. Lewis
Life is usually all about how you handle Plan B. - Jack3Beans
Listen without defending; Speak without offending - FaithinAK
