I'm sure every-once in awhile, everyone feels overwhelmed, defeated, lazy, exhausted, and/or uninspired. Even Bill Gates. Sure he probably pays someone to take care of that too. Bill if your reading, I didn't mean that, please read this page.
What I'm really here to say today is: do whatever you have to do to find your way out of that hole, believe in yourself. If you need some time to refocus, do it, but cap that time so it doesn't turn into weeks, months, or years.
Seek out sources, the internet has ideas around every corner. Try this link, it helped me out of my latest rut. Check out the video, it's an oldie (2008) but goodie. Sure it may be business orientated, but it's easy to relate. Watch the video daily, re-read the offending words, make friends with a Drill Sergeant, just get out there and be pro-active.
That didn't do the trick? Look for key note speakers in your area, free lectures at your local collage, attend seminars, talk to a friend who is really good at giving you a pep talk. Don't have a friend like that? Get out there and make one.
Hey you, yeah you. You look awesome. You're brilliant! I like your smile. You have the best laugh. You're cooler than Teenage Mutant Ninja Turtles, the Planeteers, and Power Rangers combined.
Complement someone else, it will make you feel better too. Go out there, make your future [or current] grandchildren proud!
What motivates you?