Hi there CheerDad
Put your foot firmly on the brake pedal..and take two steps back..hmm let me see..
Ex wifey can probably be handled by pretending (for a while) not to react to whatever she says that really gets you down or winds you up whatever the case might be!...Once these sort of people realise that they are not having any effect on you they quickly lose interest and go and pick on someone else..this works trust me, and after the first couple of times you ignore the taunts and button pushing you no longer have to pretend ~ and you find that you really couldn't care less after all lol
As for pleasing everyone - forget it lol..sheesh that's way too exhausting..not enough hours in the day for that job..and it's impossible! Sounds to me like it's time that you started pampering yourself a little..distract yourself from needy people in your life and try out a new hobby or challenge that's gonna make you feel good!
Take good care.