One of "Those" Days

I'll be honest...considering that the only thing that's consistent with my sleep has been inconsistency, I had this coming.
I finally slept through the night last night...I can't remember the last time I've done that (not good).  But it also means I slept hard...much too hard, in fact.
Result: I can't focus today if my life depended on it.  I made it through class and managed to find a source for my research project, but that has been it.  I've been otherwise distracted beyond belief.
It won't be impossible to find my way back (especially now that I know www.dbtselfhelp.com), but I feel discouraged by the size of the proverbial mountain I've left myself to climb.