How do you think?

i carefully consider whether im going to fight it or go with the flow when the new world is on us...

Exactly the same as you :>

I usually think by talking to myself. Anything that pops into my head, I say it. It's usually just quotes from media and stuff, and spmetimes I act out conversations with myself, to try and examine myself.

Yep, I'm pretty much a lunatic. :P

I create scenarios too and i think of lyrics for a rap songs i make

If I'm trying to think logically or go through options, then I write notes. It helps me think more clearly.

Otherwise, similar to what other people have already mentioned.
This thread reminded me of a segment in the 'fist of fun' (British comedy) book years ago about 'mad thoughts'.
On my phone, so can't link very easily but here's a mention of some of them in a forum

http://www.cookdandbombd.co.uk/forums/index.php?topic=4810.0

There is always music running through my head. I mean, literally all the time. When I'm gaming, when I'm reading, when I'm fapping (which is EXTREMELY annoying), when I'm in school, etc. I don't know why, but there is always some song running through my head, and it never stops

Same like you, im thinking of past mistakes (they are not even that big, just misunderstood words), also i think how great it would be to have Zooey Deschanel as my girlfriend.

I don't.