Exactly how my days are passing by. I applied last year with a half-baked file and shut out. However, I am feeling much more confident this year (I have been offered and received a letter of recommendation from one of the professors from my top choice of school; ditto for my writing sample etc.).
Still, it is impossible to beat back the feeling of desperation through the day. Most days I cannot even tell whether I have psychological problems or what I am feeling is just a byproduct of the application phase. Even though I have made a thorough and well-thought list of schools to apply to and spared the money to be spent on applications, I doubt myself harshly; whether I am wasting my money, since I have no shot whatsoever among the overly qualified.
Enough with the dismal description. What keeps me through these feelings is the fact that I am doing ALL I can. Distinguishing what's under my control from what's beyond and internalizing this state of mind is crucial to overcoming these destructive seizures. The only thing that should get you down is the fact that you may have slacked off. If you did all you could during the preparation period, then at the end of the day you should lay your weary head to your pillow at ease. That's the only thing that keeps me going these days.