I guess I have been over tolerant all my life.
Then about 6 years ago, the change came....I wast told not to let people walk all over me, and it was a wake up call.
I thought it was part of life to put up, and shut up!
Came at a big price, but now at 63...well with some courage, I say what I have too.
(I hate doing it- because old habits died hard, it's the lesser of the two - and helps me stay strong).