Prayer to heal unforgiveness

I would like prayer on the fact that I have anger and sadness in my heart from people I allow to hurt me. Sometimes my kindness is seen as weakness and people take advantage of that. Sometimes I don’t know when to let go of toxic insensitive people in my life. I keep seeing the best in people and giving them the benefit of the doubt and then I get burned.

Remove the filters that don’t let me see the truth. Remove the naive and gullibility. Help me handle people who aren’t honest tactfully.And free me from the guilt and shame i currently feel because of mistakes in the past.