Same here. 3 classes, honors thesis, playing a sport, internship, volunteer research work, and 3 part-time jobs (fitness instructor--various teaching gigs around NYC)... and I'm legally-blind.
I've had senioritis since freshman year, haha, but I'd really be able to focus much better if I heard SOMETHING back from anywhere. Some days I find myself motivated, but others (like tonight), I just come home, obsessively check application statuses, read forums, get discouraged, and cry. Clearly, a healthy cycle! None of my friends are applying to any grad programs, and I wish I had someone around going through this too so I can commiserate and share all these absurd and probably irrational emotions!
Good luck with apps and the end of senior year!!