“ Did this change who you are?” — My candid answer is … a little.
“Do you behave differently and are just happy all the time?” — Yes I do, but not much … and, no, I am not. I just recover much more quickly.
“I worry this may send some people into “la la land”… any thoughts on this?”” — This is a valid concern (they all are). It’s important to do this in a safe place with people you trust, in a medically monitored environment. That’s the best I can give you. Do your research on the who and the where before you go.