There is a great book called, "The Noonday Demon - An Atlas of Depression" by Andrew Solomon. I've just begun reading it. He talks of his own experience but also covers the history, the politics, the treatments, etc. for depression. But what thing he does great in this book is describing what depression feels like. This book was on the New York Times Bestseller list and has also received the National Book Award. It is a compelling read.

If your T doesn't understand how debilitating depression can be, he may not be the best person to be talking with. From what I'm understanding from reading this book is that sometimes talk therapy should be helped along by medications. Are you taking any anti-depressants? Like everything else with our bodies and minds, depression is also chemical and can be helped by correcting some chemical imbalances.