Hey newtestamentmemorizer, we all feel for you here and a lot of people have been there. We don't know exactly how you feel, this is your own life, but we can try to support. For me when I'm down and depressed I have to get out and do some thing, Physical, around people, active. Any thing that is fun and free. Like basket ball, playing cards, even chess, the little things that make you feel a little good can start your mind turning around to a better place. Keep talking and don't give up.
Mine just got more manageable too, but half of that is from completing a few of them and the other part is not adding to many at once. I try to review my individual verses first, then my passages. I aim to complete a full chapter at once but done are really long so I do a bit then I come back and do a bit more later, working through the whole chapter before might on to other verses. I also work on them at random times like before work, on breaks, then just a little more before bed. I don't have long periods of time to work on it but bit by bit keeps my mind in the Bible through the whole day.