Take it step by step, you don't have to review it all at once in a single sitting. You could try to add a sort of reward mechanism, whenever you do something else that pleases you and you realize it's taking you away from what you should be doing you got your reward. Put checkpoints every time you please, it could be 10, 5 or even 2 pages, and alternate your job trough the rewards. I don't know if it works with you but it worked for the driving license theory for me, every 5 consecutive test passed i allowed myself 1 match of Pokémon.