I want to thank everyone for their honest, heartfelt responses, and hope they will continue.
The things people have shared are really making me think about the two extremes how each side has its share of of the pros and cons.
For me, the problem with those on the more extreme side of the"happy-go-lucky" end can sometimes be so "positive" that they refuse to deal with anything "too serious" -- meaning basic life responsibilities.
For instance, if you try to confront them about a money issue, their response might be, "Oh, don't worry, it'll all work itself out," or, "Let's not worry about it today, let's just ourselves," (but the tomorrow when it gets dealt with never comes.)
Even Christians struggle with this. How many Christians are deeply in debt because they wanted to "live the abundant life God wants us to have" on a budget they just couldn't afford?
And if someone tries to stand up to them about it, it even seems to be a common mantra promoted by pop culture today: "I refuse to be around your negative energy!", or, "I won't accept all these bad vibes!"
Positivity isn't a positive trait (to me, at least) when the person refuses to face reality.
And I realize that the "tortured soul" might also shirk responsibility due to depression or apathy...
Finding the "right" balance seems to be the obvious answer, but thanks to sin and the ways of the world, I guess all of us are, at best, slightly imbalanced.