A 2 part epoxy will do you well. Make sure to clean all edges of the fracture to remove dust and grime, and make sure everything is dry before you start mixing.
I think wax would fall apart in any kind of heat with those forces acting on it. Good luck.
I did the zyban route, it pushed the nicotine withdrawals off until I quit using the med. By doing that, I was able to focus on the habits and rituals that I had built up around smoking and replaced those with better habits (exercise and walks and shit). When the habits were established, I knocked the physical cravings after stopping the med and it worked! I had tried to quit like 7-10 times seriously before that. Smoked for 10 years, 1+ packs per day for over 6 years.
Just keep trying until it sticks, OP.