It doesn’t matter if there actually is a conspiracy from some malevolent group of people keeping you down, or if your parents ruined your life, or kids in school made fun of you, whatever. That’s in the past. Ruminating on that is only useful insofar as if helps you learn from it to benefit your future.
If you want to survive and thrive, it is best to look at the future, try your hardest, be positive, and just take every day one at a time, trying to improve your situation bit by bit.