I have bipolar OCD and anxiety diagnoses and I cannot study. I used to be very hardworking and very successful. Now I cannot even study?

I am very worried about this. Do you think it's because of bipolar, OCD and anxiety, or is it my weak willpower?
I have bipolar OCD and anxiety diagnoses and I cannot study. I used to be very hardworking and very successful. Now I cannot even study?
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