Surrounding yourself with the right people is crucial for a dry January, particularly if you're lacking in the willpower department. Tell your friends what your plans are so they know ahead of time not to pressure you, but also tell the people who are going to hold you accountable. Friends who will gently remind you that a Moscow mule doesn't sound good right now, but a muddled berry mocktail does.
Align yourself with people who won't pressure you or make you feel uncomfortable. Attend social events with the same kind of people. Chat with friends who are living sober or aren't into boozy activities as much. It takes a village!