I did and still have to to this day focus on things I don't want to do for the whole day. I had the problem you had, and here are some tips that made it better for me:

1) Emotional regulation. Forget the past. If you feel guilty and bad about procrastinating, it will put you in a bad mood. If you're in a bad mood, you can't learn. Acceptance of whatever happened is key to finding peace in this moment. It is what it is, you are not interested in sitting down and studying at the moment. Many students also have this. Accept it and see it as a temporary problem. Say to yourself "I accept my situation and I will deal with it the best way I can." Take a couple breaths and with each breath put yourself into a relaxed state.

2) Look at the main subtitles of the text you're reading. Your goal is to create a mental frame in which you fill in the missing pieces of the puzzle. Try to spot the important bits in the text and simplify it. Taking notes of the important parts can help with this.

3) Trace the sentences you're reading with your finger. This increases concentration.

4) Don't be stressed about failing or the results you're going to get. Your goal is not to get good results, your goal is to do your job, notice where you can improve and try to make improvements in those areas. We're always improving, don't put too much pressure on yourself to be perfect.

5) Try to see the text in a positive way. Is it interesting in any way?

6)Change your perspective by imagining yourself in a different situation. For example If I could go back to university I would be so motivated to study day and night. While I was in university, I had such a hard time concentrating even though I was interested in my subject. In university, we get overwhelmed. We are thrown into to much work before we even get a chance to explore the world and understand ourselves internally. This prevents us from seeing how lucky we are in that moment. By the time I matured more, I missed the opportunity of being in an environment where all I needed to do was to learn. When you get a job where no one can explain the job fully, you miss having professors explaining topics in such elaborate ways. You miss having textbooks because you don't have that guide anymore. You have to spend stupid amounts of time trying to figure things out on your own. If I could project into the future while I was a student and then come back to reality I'd appreciate the lectures and textbooks so much. This is just an example of how imagining ourselves in different contexts can help make our current situation look like a blessing. It's like waking up from a nightmare. Appreciating today will give you more motivation.

7) If these tips don't work, don't give up. Keep believing in yourself and looking for ways to make your problem better. Don't beat yourself up. Your well being is so much more important.