is it weird that my depression and other mental "illnesses" help me write good essays ?

whenever i wrote essays i never really put all my efforts into writing them but i ended up always getting 80s and 90s on them and my teachers would tell me i did an amazing job on them . at firsst i thought the teachers just sucked and didnt know what they were talking about , cuuz i put almost no efforts in them, honestly idk how the hell i managed to write them. i always felt depressed while writing essays, so was that it ?