Crossword puzzle clue "what did i just get myself"

"What did I just get myself ___?"

"I did it well, if I do ___ myself"

"Did I just do what I think I did?!"

What I wanted for myself, but couldn't get to work properly...then received in front of me

Kant who theorized that the human mind actively structures its experience of the world rather than just passively receiving it (did I get that right?)

"Did a ton of drugs / And did better than all my alma mater

"Something a teenage boy can do for hours at a time." The survey did not say (but a contestant did): "___"

Best-selling author who wrote "I did not write it. God wrote it. I merely did his dictation"