Motivation problems for 6 months

I have been practicing lucid dreaming on occasions for about 3 years, and I have had about 30 lucid dreams, some quite amazingly vivid.
However, now I haven't been able to feel very motivated at all for almost 6 months;
my last serious practice time was throughout February this years, and that month I practiced MILD and overall awareness every day and evening, and I got 5 or 6 lucid dreams that month.
But ever since then, I haven't been serious about lucid dreaming at all, but I wish I could be.
I have been quite occupied with school stuff lately, so I guess this is a distraction, because I tend to have an easier time with lucid dreaming if I have a holiday and am free from any immediate concerns (right now I am practicing for a math test that I will have in about two weeks, so I am fairly "occupied" right now as well).
I can sometimes feel small bursts of excitement when I watch lucid dreaming videos by serious lucid dreamers like Stephen LaBerge, Robert Waggoner and Tim Post, but that excitement quickly wears off.
I sometimes also fantastize about things that I really would like to experience in lucid dreams, but my reaction is more like "yeah, that would be awesome - but some other time".

I have no idea why I think this way.
What should I do to regain that more constant feeling of excitement and motivation again?

Think of the 1 thing you want to do most in your life and visualize yourself doing that, and then tell yourself if you keep up your practice you'll be able to do it in a LD. That's what I always do and it keeps me motivated even when I don't feel like keeping up with awareness.