you could try to get interested in other people around. even though you can't make it in the beginning, at least you can pretend to. People say that our action can influence our mind to some extent.

As I said before, have a look at this site http://www.italki.com/knowledge/page/HOW%20TO%20MANAGE%20STRESS%20AND%20ANXIETY.htm Otherwise see a doctor if you are depressed.

Depression is a generally nasty emotional condition which has the potential to become a chronical illness. In it's milder manifestation, 'melancholy' as often named in my native language, it is a condition in which a person is unable to feel joy, excitement, motivation and express significant will, while the thoughts seem to be persistently focused on a few dominating issues. Usually such moods as melancholy are periodical and often last no longer than few days. Often melancholy is related to the initial phase of 'liking' or 'falling in love' with some person, a condition which very often is encountered in a normal classroom. Although melancholy ( I use this term regardless of a valid scientific terminology) is somewhat an uncomfortable condition it is the most 'fertile soil' for artistic inspiration and often is leading to periods of personal creativity. Therefore one may consider it as a necessary interval in the maturation process of an individual. Depression which is often escorted with feeling of fear, severe emotional bitterness and dissappointment and social detachment is very often encountered in the case of an unfulfilled desire to romance, again a condition naturally ocuring amid youngsters and adolescent. Focusing the student's attention to the fact that although our nature and our instinct implies proximity and mating with a person wich is naturally, often iresistibly attractive to our current emotional condition, our logic and reason are the tools which we need to use in order to bridle our instinctive nature and achieve the necessary maturity and experience which will allow us to progress into a sustainable, strong long-term relationship once the time and the oportunity appears. Depression is also the result of family and employment problems which again, affect our mood in a negative, often devastating manner. Having access to the advice and company of an experienced person who is gifted with a loving character and patience is the most essential treatment to depression.

I think you have built a fence around you. Damage that now and start living again with happy. Life is very nice and nice if you want.