I get that way sometimes and feel as if I am going to explode, if I make myself walk away and take a break then return everything seems so much easier, unless it is an assignment I totally do not understand and I have waited to long to get help from my professor, I do some google searches to get an idea of the direction I need to go, then I make out OK, I call it an anxiety attack, and it is not funny it is very real and scary.