Here are some good posts on making resolutions for 2018:

Ten Questions To Ask at the Start of a New Year (pdf) – Don Whitney

Nine Questions to Ask Yourself to Prepare for 2018 – Scott Slayton

4 Christian Principles for Making New Year’s Resolutions – Burk Parsons (Ligonier)

A New Approach to New Year’s Resolutions – Zach Nielsen (TGC)