A few things:
Being alone with your thoughts can 'enhance' the drepressive feeling you have. You can try and distract yourself but dont just ignore what is causing these feelings. Seeing a doctor is always recommended when feeling depressed. Simple things like getting a good night sleep and eating properly can help but sometimes you may need medical help.
Depression isnt something to just let go, you need to monitor it and seek some advice from doctors.
During high school, i didnt really have any friends. Id hang around people but was never involved with them after school hours. When school finished they all moved away and i just had my woolworths job packing the freezer. I only worked 15 hours a week and my idea of a social life was getting mcdonalds on a saturday night. I pretty much did that for five years. It was a very lonely time and i dont know how i got throught it. But my lack of social life meant that after a few years i had enough money to put a deposit on a house. (all this from working at woolies!) although my schooling grades were pretty bad and i had no further education to show, buying a house gave me joy in the sense that i felt like id 'acheived' something.
Now im not saying, be a hermit, save money and buy a house, im saying see if there are little things you can do that feel like an acheivment, do them! Do a few different things like short courses and the like (im not sure of their availablity in your country).
The thing with depression is that its like mud, if you stand still then youll be stuck. You have to keep making steps in order to get out of the mud.
I remember when i had no social life, i used to go on the net and talk to random people (like trmk, or myspace). I found it enjoyable to talk to people with similar interests, and ending up becoming pen pals(internet pals really).
I thought nothing of it but just enjoyed the interaction with these people. In fact, thats how i met my gf. i was just looking to chat with people and we just seemed to get along well. we were friends for about three years before we even started dating. That was two years ago and now we are living together.
These dark days you have, alot of people will have been through the same. Obviously hidsight is a great thing but when your in the midst of depression it is hard to see that light at the end of the tunnel.
Trust me, that light is there, and youll be rid of that mud!
Use this time to write down a few things on what you want to do, and what you want to acheive.
Keep in touch with these trmk forums, it seems that this is an interest of yours so stick with it
(I congratulate you on coming on here and talking to us about it)