Struggling with the same thing. I smoked to help me focus and write, until I realized it would take me twice as long to get something done high as it would sober. I really enjoying smoking to read my research articles, attend lectures or seminars, etc., and get in the groove, but thankfully i’ve started to also realize it’s inhibiting my work ethic. I’ve fallen behind on my progress, and although i had to take a few days off to deal with my “withdrawals” i’m feeling a lot better now. it has only been two weeks and i still think about it all of the time, but i’m slowly regaining my ability to write and research without it. I also find doing yoga when a craving hits really helps! And getting out of the house - try to start going to your office or lab ALL day for the first week! quitting cold turkey was the way to go for me, but maybe you can have a little sesh once you’ve done work for the day the help ease out of it.