You're choosing not to analyze yourself and instead relying on and trusting other people's logic (inf. Te). The thing with Ti is that it analyses and lives by it's own logic, if you don't trust your own logic, how could you possibly be a dominant introverted thinker?

Ah, actually, that's not so much the case. I came into this under the strongly suspecting I am a specific type, and was looking for outside opinions to contrast with what I've come to understand about myself because I think the more you invest yourself into one MBTI type, the harder it is to think outside of your preconceived notions. So everything everyone's been saying here, I've essentially taken apart in my own mind. I'm not debating points because I just want input unobstructed by myself, y'feel?

I'm definitely prone to thinking and hoping the grass is greener somewhere else rather than watering it where I am now.

Common for INFPs, specifically this is a trait of enneagram type 4.

I consistently test as enneagram type 5w4.

Setting ideals for yourself, 'right and wrong' rather than rational logic.

I disagree. I'm sure many introverts have experienced getting too comfortable with alone time. Once it becomes a habit it's hard to break out. I recognize that I need friends - especially in the moments where I'm sitting around and thinking, "I'm feeling awfully lonely." Not to mention, as for the delivery, I was setting standards for myself because I have a fixed income and being lazy enough to order delivery rather than cook food for myself is...unwise.

whenever I do get angry, it's always over the principle/underlying cause of the matter.

Fi + Ne, it's an NF thing in general.

I know several ISTPs and INTPs that have the same problem. Not just an Fi thing - Ti too. In a lot of ways, Fi and Ti act similarly...

Yada yada

Fairly certain I'm not an INFP.