Can you feel that?

That feeling that invades yourself and forces you to question not what are you doing, but what aren't you doing that. I'm not talking about that typical feeling that sometimes are seen in TV where the protagonist feels sad and question himself why are he doing whatelse and where does he wants to do with his life, I'm talking about a mental impotence that substracts your energy and your feels like to do funny things. Time ago one could stay whenever he wants doing what entertains him, but now one just can forces himself to do that, and when he's doing that he gets tired immediately. Now one just wants to sleep and to wait for... to what? It's a feeling that don't make you question yourself what'll you do, it makes you to question why do you want a "will" and what's really important. It's so hard to avoid this feeling when it enters to our mind because it invades all yourself and I think that just a naive could avoid that.

It could be because these exams days or maybe for other things (or for both), but now I use to feel this feeling very often.