Few people manage to gain meaningful insight in how their childhood traumata influence them. Most prefer to stay delusional or lack the intelligence for introspection.
And paradoxically I believe part of healing, is to let go of the hope to find healing or to be fixed. It only makes you postpone striving for life goals.
If you accept that you cannot be fixed, you may instead focus on finding ways to compensate for your flaws.
For example, in regards to your trust issues, I may recommend studying body language. That way, if someone tells you that they love you and will not harm or cheat on you, you have a way to validate if they say the truth. That might be sufficient to trust them.
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