What I would suggest is to rid yourself of all distractions first. For example, if you wanted to study for an important test, set aside your phone and review your notes. Listening to music can also help productivity. Remember, always stay in the present. The past is the past. Just take deep breaths and move on. Just keep studying and make sure to take breaks
You can start putting times for each thing you have to do, putting alarms would help you knowing the times-
with the anxiety you can start listening relaxing songs, drawing or having hobbies like painting, singing, talking with friends, or even sleeping, put goals to yourself, push yourself even when you are lazy, take a short break time; do it regulary and with time it would become part of your daily life, do your work with your friends that would support you to continue making your work °*°
