_Next time - Before_ you're too depressed to act, can I suggest kicking some ass?
Do you know I have never know serious depression in all my 65 years of life? 
Oh for sure I've had some hellish times and events to live though and run away from - but I have always recognized 'the blues' or mild depression' as a sign to 'kick ass' some one's ass - maybe even once and I have acted. Not all my actions were perfect though i always tried to act wisely in the difficult situations. But I NEVER once put up with the cause of the depression and didn't adapt to it. 

Now I hate to be a sickening Pollyanna but in August 20 2010 I discovered I had pain on movement and had to rest until a tumour was removed in November - then there was skin cancer and months of infection, then there was months of pulmonary fibrosis complications and pneumonia then a broken vertical and skin cancer and now more skin cancer. Breathlessness and pain on walking. So do I get depressed? Hell NO! (excuse the expression.)

I am going swimming today and I have written and had published a novella and am now striving to get the 100,000 word novel I wrote while forced to rest,  I regained an awful lot of the weight I had lost when I managed to fight back from health problems in 2007 and I'll do it again but I'll not allow any black dog monsters into my life - ever.   Kick ass - fight off depression while it is small and manageable.