The challenge of creating motivation for making changes by using resolutions is that they are notoriously hard to keep. The notion of practice, however, has an appeal because practice is a part of learning a new skill, moving toward improvement, and it is both a noun and a verb!
How do you take off the "lack glasses" that are keeping you from the abundance of your own life? Keep the focus on you and practice gratitude. It's not about going into a comparison and being grateful because what you have is better than what the other person has.