You kind of remind me of myself. Around high school, I started having problems with studying, writing essays, and so on. Grade 12 was pretty bad for me. For history class, I barely touched my textbook, was late or absent a bunch of times, didn't get assignments done sometimes... and my final grade was in the 80s. When I think about that year, all I can think of is how lucky I was. I was really out of it, especially towards the end.

If you've just started feeling this way, that's good, you can nip it in the bud. The longer you have problems, the worse it tends to get. I still have those problems three years later, and it's not getting better. I'm planning to start medication in the hope that it will help. I really don't want to, but I'm starting to feel I don't have a choice. If I didn't naturally pick up things, I would have failed quite a few courses by now.

Also, did this start after you started therapy? It could be things you used to have under control and/or didn't think about are being brought up, and that's giving you some anxiety.

I'm sorry if this comes across as depressing or demoralizing, but I sincerely wish you the best, and just don't want you to fall into the trap I have.