First Week at Work (very depressed)

Though I only started working last Friday, I have already missed my "good old jobless days". Why? Because all of my coworkers work 6 days a week and at least 12 hours a day, driven by the dream of becoming rich and the fear of being jobless if product not delivered on time. Sadly, neither the carrot nor the stick motivates me. If I make any effort to conform to this crazy schedule, it's because I can't face the shame of letting people down. Deep inside, I feel the playful and joyful me I found in the past half a year is dying. I try to remind myself the AA (Alcoholic Anonymous) motto: one day at a time, but God knows how long I will last.