Wow, that was pretty dark.

Seems like there are more phobias mixed in herre, fear of not being able to move, fear of drowning... it's a pretty dark animation, albeit with that beautiful scene right after. The way he wakes up again, I guess he's not actually in a tiny cubicle, just crazy. The expression doesn't seem the most despairful, but the voice does, nice work!

-cd-

I've given you the 5 because I have seen the growth in your work. It's progression overall from start to finish and it's a brilliantly crafted exploration into this Fear. However the feedback below touches on all I was going to suggest in a nutshell. Good work man and keep up the good work.

The story told is great, and I like the way it's imminently relatable, seeking something like atonement under the pressure of a phobia. While I can understand you based this particular vid' on a real nightmare, I might also suggest (in a revisit) that you consider cutting to the absolute essence of the phobia, itself. I might also suggest (in a revisit) that between now and then, you take a serious study on the "face of fear".
The reference to revisit is admittedly from the suggestions above and already a possibility in your mind, so I'm thinking it would be a great idea to revisit this at some later date and see how you've grown as an artist and a storyteller. I personally saw only a limited expression of fear, but heard a linear travel through anger, terror, and self-atonement, so maybe, just a little more detail around your character's face...? It shouldn't take much to arch eyebrows and put a furrow or two in the forehead and bridge of the nose.
Of course, as you can see by the rating, I liked this. I certainly wouldn't demean work like this in the slightest. At the same time, it's a practice among artists and storytellers to return to older works for revisions to reflect upon their growth and journeys. My suggestions are only meant to offer something you might find valuable in the future should you come back to this and watch it before you re-animate.
As a fellow intro-spective and an explorer of the darker side of our humanity, I certainly look forward to your next.

As scary as this is, it's quite beautiful. One who is trapped under the weight of his greatest fear and looks for atonement. The score was very beautiful as well as the imagery that occurs after he is submerged. Great job!