Hi @Quizlet, welcome to the forum.  I did a similar thing when I first started to figure out what my issues were and trying to fix them.  I looked up stuff on the internet, and found no end of theories and ideas and it became so overwhelming that I found I had less of an idea than when I began.

For me, I found just talking to people, at support groups and online in places like this especially, gave me a much clearer idea of what I needed to work on.  Talking to people who had similar issues allowed me to learn more about what mine were and a much better understanding of why I did things I did and felt the way I felt.  Once I had this better understanding I could then talk to people about specific problems and I felt much more 'normal'.. I hate that term, but less alone I guess.

I've been told by a couple of psychologists (Yes, I even tried that this year) that I tend to overthink things.  I realised they're right... to an extent.  I still think thinking a lot is helpful, but ive also realised that thinking a lot about too many things just makes everything unnecessarily difficult.

I started on a forum just like this one, so I think you've already made a great start by reaching out here.  So whether it's here or some other support you feel comfortable with, keep reaching out and talking to people about how you feel.  I feel like that's the one biggest thing that has helped me so far.