You just have to forget nicotine exists... There are better things than nicotine, like piracetam, oxiracetam, aniracetam, noopept, etc that you must not take while on nicotine because nootropics + addictive substances is a very bad recipe for entrenching you deeper into addiction.
This is because nootropics upregulate neuroplasticity, synaptogenesis and neurogenesis, basically making the brain more plastic and electrically superconductive. If you take addictive substances on top of nootropics, you make it far harder to quit.
So when you are contemplating stopping use of heroine, nicotine, cocaine, methamphetamine, or anything like that, learn about nootropics, and instead of quitting simply replace the habit with positive substances proven to be helpful and protective to the brain long term.
And I'm also talking about SSRI's and other antidepressants or antipsychotics. When I went to university my focus was the brain. Because nothing else matters if you're stupid. Learn to optimize the brain FIRST. Take care of your brain and it will take care of you.