Thank you for your post.

I think you are right; I am most likely depressed at the moment.

My problem with it is that it is sort of a self fulfilling prophecy; it prevents me having the fun I need to get over it. Particularly since what I enjoy most right now is doing fun things with friends and being social. Primarily, I feel forced into introversion, and it greatly upsets me when my main goal is to be more socially able (thus requiring extrovert behaviour).