Sounds like you are taking the right steps to improving yourself, your doing a great job! keep studying and trying it all out in the field and you will see results.
Your friends are not supporting you on this one , so don't mention PUA around them anymore because all they will be is negative about it . Also consider whether they are really friends. A real friend should support you and understand that you really need this to turn your life around. Even I can tell by just one post.
Focus on positive things- visualize yourself having success with women and you shall have success. Be confident.
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Are there any obvious mental problems in what I wrote?
no there are no mental problems your sane as can be.
Good luck on your PU , but I am sure you will need little ! because your going to rock it !