I really admire your courage admitting to your addiction.
Salsabike pointed out the obvious - smokers have a very visible habit.
If anyone was to see me in the kitchen at 6am they'd see me having a cup of espresso (flat white for the Australians and Kiwis) and - chocolate. Or chocolate biscuits. The other day it was chocolate cake.
But because no-one sees me, no-one can judge me. But everyone can judge smokers.
I do hope you enjoy your riding, and that it gives you the confidence to make any decision you're comfortable with. Good luck!
(And now I'm off to have my second flat white of the day, and some Tim Tams!)