I'm pretty sure my job performance would take a significant hit by cutting out caffeine and nicotine. Cutting out booze would make me more productive though for sure.
Discussion
cutting out the nicotine has made my hyper, so the booze and weed are required to sedate myself in the evening.
I am talking my head off way more than normal otherwise.
Been through this one before, takes about 3 days to get through the worst... almost there!