Do you prep for your new year's resolutions?

Was talking with a friend about how we tend to wait until Jan 1st to start working on our resolutions (make sense, it is a NEW YEAR'S resolution after all..), but it can be helpful to ask: how can I prep for this resolution to make it last? (e.g. making a workout plan BEFORE entering the year with "get fit" as a resolution) what are your resolutions + do you prep for them beforehand? regardless, happy december!