Anything meant in this world for evil, God can use for good. God is able to take the mess of our past and turn it into a message.
The biblical model is that God deliberately chooses imperfect vessels - those who have been wounded, those with physical or emotional limitations. Then he prepares them to serve and sends them out with their weakness still evident, so that his strength can be made perfect in that weakness.
Jesus didn't come to make us safe. He came to make us dangerous to the kingdom of darkness.
We need to stop making what people did to us bigger than what Jesus did for us.
Jesus rose from the grave to make us dangerous to the kingdom of darkness.