When I am deeply depressed I recede as completely as I can. I sometimes get "lucky" and get a phone call from a friend during my worst hours.

I do leave it up to chance without even realizing it. I feel that with someone who is depressed you need to actively engage them beyond ressuring them that you will be there for them. Words/ offers like that have very little meaning(sorry, but true.)

Fortunately I seem to have some kind of network to depend on, friends/aquaintences.

If you have the opportunity to call or go to your friend it will go far. I knjow it's not always possible...

Good luck.