If depression makes you feel a bit less "there" mentally, that causes clumsiness for me. Usually, it's only after I've had the second or third thing go wrong that seems like it's *perfectly* set up to frustrate me that I realize I'm not well focused, and it isn't that I'm doing anything wrong, I'm just not doing it entirely *right*. I'm not putting the cup far enough away from the edge of the counter; I'm not focusing on what I reach for, and how good my grip is; I'm not taking surroundings into account when I take an action.

If your legs aren't super-stable, I imagine the same thing could turn into walking hazards