Personally I've found the one reliable metric I have with which to evaluate decisions is: happiness. Everything else is inherently externally derived and I might have good models of how they affect me, but I can neither control nor reliably predict them. For example, I have a good idea of how something will impact me financially, but only to a point. I also can't actually control that outcome. How something affects my happiness, though, that is something I have the most intimate ability to determine. As far as I know something makes me happy, I can't know anything else more. Therefore I try to focus most decisions around what makes me happy, with other metrics thrown in as applicable.

One can choose to be rational and logical, but to what end? How does that serve you, does it? If it doesn't serve you, perhaps consider abandoning rational thought and logic for as long as it might serve to do so. We are not static beings and can be simultaneously rational and irrational. That's our power: to choose how we react and adapt.

Lastly, one thing I've learned the power of as I've gotten older, is the power and benefit of holding beliefs you know to be false. I used to never understand how people could believe demonstrably false things, but I now understand that even something as absurd as that has useful applications. Use it wisely.