“No discipline is enjoyable while it is happening—it’s painful! But afterward there will be a peaceful harvest of right living for those who are trained in this way.” Hebrews 12:11 NLT
Each year I choose a word to define the year... Something to strive for. 2015 was Focus - and I struggled mightily and failed often to stay focused on the present. 2015 was a rough year. Something I lacked was discipline. Life needs it. God approves of it. It is necessary to live fully and be disciplined. Being disciplined with something small, like making my bed each day or doing the dishes often, can carry over into the bigger things in life, like finances and health. Maybe the biggest discipline of all that takes a small amount of time each day: being disciplined spiritually. Being in the Word (even if it is listening to the Word) and hearing what God is saying. Being disciplined and understanding that we don't have to KNOW what is going to happen but learning to KNOW God and that ultimately He is in control of what is happening in my life and trusting His ways. So as far as a New Years resolution: learn discipline. Discipline around the house. Discipline in what I eat and how often I exercise. Discipline financially. Discipline at and in my work. Discipline spiritually. Discipline takes patience and work. In the end, discipline is worth it. 
