Rozine, it sounds like you are being triggered. What I did was self talk when triggered. You need to be able to seperate yesterday from today. When you get triggered you can tell yourself "Okay, I'm being triggered. My fear is from yesterday, from my dad. What is going on right now? Today is not yesterday. Fear go away. Yesterday doesn't exist anymore. I am safe today". This can help you to focus on today. You also need to talk about yesterday in therapy so that you can diffuse these triggers. Yesterday's feelings are still with you until you express them so that you can release them.