I feel like I'm moving through thick fog
What does that feel like?  Can you elaborate?
I feel like I'm moving through thick fog.
I'm sorry but I can't help very much with this. Maybe you can try a therapist? It is good to get help if you think you need it.
Only thing I gained from therapy is that I'm mentally ill.
Well that is a step in the right direction and now that you have a diagnosis, your therapist can work with you. It is always important to reach out for help when it is needed. You can the steps you need to get better.