How do you manage the emotional turmoil of wanting to know the truth in a relationship, even if it might hurt more?

All my life I've had my every personality trait disaproved by people which led me to people pleasing behaviour even after knowing about wiser ways on how to act. I just give in because I am tired. How can I keep my boundaries?
How do historical figures like Reagan and Gorbachev shape current American attitudes toward leadership and foreign policy? Are these views consistent over time?