What is a thought that can change your life?

When I Was 6 years old I remember having a distinct thought one Day. That if i were just kind to others or peers, that maybe they would a accept me. I lived in a house of severe chaos and abuse. That thought made me into a people pleaser the rest of my childhood years and up to now. It was a survival mechanism I know now. But if my entire life changed with one thought...i wonder what new thought could help heal me from the trauma I lived for So long. Pleasing others before yourself (and not believing you SHOULD be happy anyway ) leads to low self confidence and burnout. Any Thoughts that might be Something of truth that could allo w one to feel worth going forward?