Why not all three?

Hey hey hey, my depression is relatively in control!

Now it's:

Everything is important, and I have no idea what that means!

Before depression got under control it was like "ah, shit, another thing to add to the list of stuff that matters, will occupy my mind, but never get done."

With your three powers combined I am, Mid-Life Crisis!

The key is doing something without a good grasp on its importance. Thinking is overrated. Doing is what matters.

"The whole concept of 'importance' is a figment of our imagination."

Apathy: I don’t care what’s important

What do you call all three at once?

The final form: existential dread and increased insomnia

What about "something's important but I don't know what"