Did Work Make Me Dumb

Today a coworker of mine asked me to add a feature, so I had to go over some code I wrote six months ago (when I just joined my current company). I was shocked to find that the code I wrote then was more daring and more inventive. There were more designs in the code. The code I write now is more cookie-cutter, decent yet lack of imagination, a bad imitation of its previous self. Work stress also makes me less experimental, just want to get things done instead of exploring different ways of doing them. No wonder I am bored!