Do call your T if you feel the need arises, talking things through when they are so dark is always the first option. You also have everyone here listening.

It seems that the one constant that takes you out of yourself is your work. I assume you have to make a supreme effort to attend and complete the day's tasks? Look on that as a positive distraction for a few hours, you are out of bed, interacting and functioning even though the Depression and issues are there below the surface. Extend that energy and utilise it when you get home, try following some of the ideas that have been put forward.

Dealing with Depression is not easy, I have battled with it as a Personality Disorder all my life. It is not a case of snapping out of it, cheering up or letting things go, setbacks hit the Depressed harder and longer than they do Normies. You are going through a tumultuous time at the moment and you need to find a small harbour in which to shelter.

Dave.