I think seeing a therapist sounds like a good idea. If you don't know what it is you're feeling a therapist can help with that.

To you're original question I'm sure you can still learn, it's just that you can't, at the moment, learn what you think you should be learning. There's undoubtedly a complex mess of social and physical and psychological reasons behind this. Doing the work that's required to understand this mess and find a way through is hard but you can do it. Take care of yourself.