Yeah, it's a bummer here. Even in the summer we get gray skies 40-60% of the time.
And that's why I like marijuana. It's relatively cheap comparatively, it's physically non-addictive, and things don't go down the poopshoot for me if I stop for a few weeks. However, if the guy plays sports and likes to be super-active, change, goals and sunshine are probably the option to go with. I play games and write music, so I like bowls =P
edit: on goals, setting out to do something and accomplishing it can help in spades. Confidence is important in fending off dark thoughts.