Hi Cristina,
Welcome to Neurotalk. I'm sorry to hear about your struggles too.
After reading your post, I can't help but think that you are trying to do too much. You are expecting too much of yourself given what your brain can handle right now.
You recently (May 5) sustained a head injury. That wasn't too long ago. The best thing you can do to heal as quickly as possible at this stage in the game is to rest it! If you get lost in a store, it's probably a sign that you shouldn't be heading into stores right now... whatever you're having trouble with might be a sign that your brain is overloaded and needs rest.
Rest doesn't have to mean laying down in a quiet, dark room. But it can mean not demanding that your brain operate the same that it did before this latest injury. It will take time to heal itself. You need to reduce the amount of stimulation that you surround yourself with so your brain can rest.
I sustained a head injury in an auto accident almost two years ago and I'm still not functioning as well as I was before the accident. My brain still requires a lot of rest. I'm significantly better now and I've been given an excellent prognosis. But it's still unwise for me to demand that my brain to do what it could before the accident I was in. Overdoing it like that can cause a setback and prolong my recovery.
If you feel like sleeping, that's probably your brain's way of telling you that it needs you to sleep so it can heal. I would recommend that you sleep as much as you can.
Of course this kind of trauma is going to cause you to feel depressed and probably anxious too. It's normal.