To tell you the truth, most 'packaged' PD sources haven't spoken much to me, either. I was able to get somthing from each one that I read, but in most cases, the whole system didn't apply. What did help was my willingness to change myself. Libraries are free, and believe me, when I was a teenager, I practically lived there (hey, it had A/C which was better than my apartment).
I grew up in poverty myself, and actually used that to my advantage to get into
Berea College in Berea, KY. They mainly take poor applicants, and all students get a work/study scholarship which pays for everything- tuition, room, board, and in many cases even textbooks. For my freshman year, there was $35.00 left over from all of the grants and scholarships that I was eligible for. After college, I was still destitute, so I gave six years of my life to the (peacetime) US Military. I served one term, got out with technical training, a security clearance, a paid for car, money in the bank, and I never looked back. Of course this may not be a viable option now, just because there is a bit of a war going on right now, but if you would like, there are non-combatant ratings that should be open.