Have you seen my mojo?

Finished one teacher's present, and I'm 1/3 of the way done with the second, and I.  can.  not.  work.  on.  it. It's like I sit down to do it and my head explodes or something.  Can't decide if it's a version of Second Sock Syndrome, or if there's something wrong with the project and I just haven't consciously figured it out yet.  Only time will tell, I guess!