There is one big realization that dawned on me (well, more like thrown in my face) from the crazy year I've been having:
While I already knew that being obnoxious and vain are obvious masks of insecurity, I am thinking about that subtle façade that actually deceived me.
There's this personality of being laid back and just cool, that demeanor of light and easy going. It's that walk that says "I am happy being myself" without being rude nor boisterous, it even comes out cute actually. It was a trait that I found quite attractive, a match to my strong-willed, independent personality. But apparently, this could also be an effective cover to hide insecurity by pretending that nothing's wrong and acting indifferent. It's not doing anything active to hurt, rather, it does passive-aggressive. No apologies are given since there was no bad intention.
Pride (the unhealthy type, that is) is what fuels the justification to admit fallibility.
To accept that you have flaws that could have a detrimental effect on others without you intending it to be is humility. And I am not referring to self-pity, that is not at all humility. There is a big difference between being humble and belittling yourself.
If you're confident with yourself, you know that you are naturally going to err, just like anybody else, no matter if you're doing your best. To recognize that you can make mistakes and that you can fail, hence, you take the responsibility that you can offend or hurt somebody, unintentionally and you apologize for it, is, for me, the epitome of humility.
Your intention is not the determinant. What matters is the consequence of your action. If you unintentionally brought someone down, the best way to help them up is to go down from your pedestal, be on your knees to lift them up.
So there, that's what I learned. I do not know if I would find myself in a situation where I'd witness humility that would stop me in my tracks, now that I have decided that I am walking on a journey to a solitary life. Perhaps, in my next life.