One word I'd use to describe my depression is.....

Painful

Dark.

Suffocating

Debilitating

Endless

Now construct a scene in your mind, or object or scenario, that fits that one word description.

("Isolating" - I am enclosed in a glass box)

Then imagine the scene change in such a way that counters or eliminates whatever you created that comes from that original description.

(The glass shatters and disappears)

How does it feel?

(I feel like I can breathe easier)

High-risk. Contemplating suicide is not fun.

Tormentful

controlling

overwhelming