I have taken a few Child Education courses that teach the same principles.Great advice @donkeypong
It really works when you let your children make the decision in ANYTHING they wish to do or you wish them to do.
My ex-wife used to get pissed-off with me.
She would say; "Tristen tells me you let him do what ever he wants when he's with you?"
I tell her; I give him 3 choices all choices that are ok with me Tristen chooses and thus believes he is making the decisions.
It's called Loving Manipilation .