When your neighbor's children resemble you - that is a problem. The rest is just mere bullshit.

This usually takes years and tons of music "processed" by you. I mean not only listening to it, sometimes it is useful and interesting to know how musicians record their music, why they do it exactly this way, and what is more behind it. Rock/metal is a nice field to dig in this regard, just don't limit yourself to a single subgenre, try different ones, explore the musicians' backgrounds and so on. Intelligent musicians produce interesting music, interesting music develops taste. I see it this way.

Maybe you should try to approach music through books? Music is about emotions, and there are lots of concept albums having books behind them, especially fantasy ones. If you have some books you love, try to dig if there are any songs based on them. Sounds the easiest way to find smth that is really "yours".

Blind Guardian, I heard them for the first time in, like, 1999