Winter in London is not particularly conducive to being an AD tool, but just in general, sunlight helps some people. It does not help me, but it helps some people. Just getting outside the house is a good idea. For bipolar, there is a therapy called "social rhythm therapy" that helps (http://en.wikipedia.org/wiki/Interpe...rhythm_therapy). Having lunch dates (I understand that your house is not picked up so you cannot have people OVER for lunch, but you can meet somewhere at a restaurant or cafe) helps. I am not saying that it is absolutely mandatory - depressions do self-resolve with time so it is not that you are bound to spend the rest of your days like that. But you can improve your condition and make this illness go away sooner rather than later, without waiting for it to self-resolve. Plus, there are illnesses that are known to self-resolve with time QUICKLY for which NO effective treatment has been found, such as upper respiratory infections and viruses, so you just let them run their course, confident in your body's ability to fight the disease on its own. I have never tried to treat such illnesses in myself or my children - I would just increase the fluid intake to help the body's natural defenses. With depression, the time for the illness to self-resolve is LONG, much longer than with upper respiratory viruses. With depression, unlike with viruses, effective treatment that speeds up recovery is available. So - use it perhaps?