I am with you, hindsight is 20/20. Sometimes I wish there was a 'rewind' or 'do over' button. But too many good times I wouldn't want to risk losing if I did that...
You have had some fascinating jobs! I still think my favorite job is 'mom', but teaching little ones is good too.
I haven't been cold turkey on the pop thing, but I have it once in a blue moon now. Like at the movies. I am on a meal plan and everything, but when I get to the movies (3 or 4 times/year), I MUST have popcorn and pop. Small pleasure I will not give up just to fit into tinier clothes...