This is a powerful story. Congratulations on your achievements, wish you many more!
I believe all those "positive thinkers" address people who are somewhere in the middle between the darkness and light - those people can understand them, I believe. Those who are in deep depression, if I may call it this way, need some more special attention, and I don't believe they would attend some conference or speech on this topic (would you?), so it's quite impractical to address them.

Great work done and I would like to include your article in my TOP5 Lucky Find Psychology articles for today. :)