It usually helps me to talk with friends about my problems, or with a good girlfriend. It kinda depends on what your problem is Simon, but 2 weeks of sadness is long, anything wrong on the workfloor? Women problems?
Just take a day off, do something you normally wouldn't do so fast.. Why not just make a short walk in your neighbourhood? It usually calms me down a lot.. or even visit your parents.
You probably just need some warmth of good loving family/friends. Keep your head up Simon
Oh and if the problem is not meant for close contacts ears at first, try to contact some of us maybe.. just talking about it really takes a lot of the pressure of usually.