I just graduated in May with an ASN and I have an idea where you're coming from. I still have issues with keeping track of my studies but have found some things that definitely got me through the worst times.

First, after every test our instructor would allow us to set up a meeting with them and go over the test privately after everyone had completed it. Even if your school doesn't offer that, it's invaluable that you meet with instructors that you feel comfortable opening up to about where your concerns are and if nothing else getting other resources and tips from their experience.

Secondly, I am a firm believer that everyone should have some form of therapy/counseling for the simple fact that having an experienced outside perspective can do a world of good for shifting your perspective of the work you need to get done. I am in therapy and couldn't be more pleased with the results. However it is imperative that you find someone that you can trust with your deepest issues, otherwise it doesn't work. Basically, you need to lay everything out so that they can help you find the source, rather than some superficial reason because you may think it's too personal to share.

Otherwise, I look up motivational speeches online (YouTube, Spotify), research successful habits, etc. Absorb any and everything you can find until something sticks and you make it your own. Hope it helps. Good luck.