People experience anxiety differently and this is a good way to show how hard it is to even just get out of your home; Others even find it hard to get out of bed.
I think one way to really show the anxiousness of the game character is having the monsters speak "bad, catastrophic" thoughts to the player as the game progresses. At first, they're just whispers (small, illegible font), but as you keep getting killed (or every time you restart a level/day), the thoughts get louder (or bigger in font) and players can clearly see what the anxious thoughts are (e.g. "You're not enough", "Nobody likes you", "It won't make a difference")
That way, the game really represents anxiety spiral, where your thoughts are just getting worse and it suffocates you... but I think it might trigger others if it does happen in the game.
I like how the small light seem to represent some sort of "sanity" or "hope" (This is my interpretation, but I could be wrong), and so it fights off the monsters for you.
Thanks for sharing this game :) Work on the feedback the others have already given to improve the game. It has a lot of potential. I hope your team continue to work on it.