What's the stupidest thing you've done in Amnesia?

[Shddup]

My stupidest thing is:

There's a door in front of me. Thinking it's must have been locked, Searching the key for 1 1/2 hour then quits. Next day, Open again use another 1 1/2 hour finding the key. And when i approach the door, Realized the door hasn't locked all along

FUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUU

I was too stupid to know that I haven't try the door yet, ya know what I mean