I'm sorry to hear that you're struggling. It's understandable to feel overwhelmed and frustrated, but please know that you're not alone, and there are techniques you can try to help manage these.
For the thoughts:
1. Focus on the present moment, without judgment. This can help you become more aware of your thoughts and better able to let go of intrusive thoughts. Try practicing this for a few minutes each day.
2. Engage in activities that take your attention away from these thoughts. Some examples are hobbies, exercise, watching a movie you like, reading a book, spending time with your loved ones.
3. When you notice an intrusive thought, do a simple physical action like saying "stop" out loud or snapping you fingers to move your attention elsewhere.
For focus:
1. Instead of trying to tackle a large task all at once, break it down into smaller, more manageable steps for you. This can make the task less overwhelming and help you stay focused on one thing at a time.
2. Try to create a distraction-free environment while studying. This might mean turning off your phone, closing unnecessary tabs on your computer, or finding a quiet space to study.
3. Use a time management method that involves working in focused 25-minute intervals, followed by short breaks. This can help you stay focused and avoid getting overwhelmed by long study sessions. Even if 25 minutes seems like a lot, then you can start with 15, 10 or even 5 minutes.
4. Consider talking to a psychologist. They can provide additional techniques and support to help you manage these challenges. When you share more detailed information you will be able to get more help.
It's okay to take things one step at a time and be patient with yourself as you work through these challenges. Practice and persistence are key components.
Also, I would avoid invoking the earth element because of suicidal tendencies. If you experience mental instability, yes, but only after your suicidal thoughts don't exist anymore.
I also have some techniques to help improve focus you might find useful on this post.
https://ancient-forums.com/viewtopic.php?f=3&t=59398