Have you tried reading over your DJ before you go to sleep?

The act of keeping a DJ is helpful for me, but what REALLY kicks things into gear is going back and reading past entries. It feels like I'm priming my mind for an LD.
And trying to force yourself to be excited about it seems pretty dangerous. Instead of trying to be excited about the process, try to focus on whatever the original reason was for you wanting to get into LDI in the first place.

And also, don't be discouraged by not working on it for so long. I've gone over a year without touching a DJ, on at least two occasions, but I find that as long as I come back with the will to both improve and carry out basic acts of diligence, I can always get back on the boat, and pick up from where I left off.