Hey! Procrastination can have many different reasons. Among several, a few can be low motivation and zest towards the work, things aren't really of much value, a person having low tolerance of frustration that might follow a task completion, the self talk matters a lot and many more. With one or two sessions with a therapist, you'll be very well able to figure out the underlying belief and be able to change this behaviour hence. Also totally dependent on how bad you want to change.
Next Steps
book an online session with a counsellor or a therapist. good luck!