I highly recommend the book Introduction to Internal Family Systems by Richard Schwartz. It’s helped me a lot, and boils down to the idea that we have “parts,” and that our thoughts and feelings can sometimes be diametrically opposite.
It, along with being able to speak with zero inhibitions to my therapist that makes me feel heard and my thoughts not seem batshit insane, has really brought up a lot of old memories and scared parts of myself. What I thought was anxiety, I’m learning to notice as a fear I’ve had for as long as I can remember, and that fear helped me survive a lot of my early years of trauma.