Impossible goal – marriage question

Hi, I’m super excited about this month’s work but can’t seem to get a finite goal in place for myself, because my goal seems subjective. I really want to work on my marriage for 2019. I want to show up as super kind, compassionate, and thoughtful. Could you please help me with this so that I can measure it by month and definitely by the end of 2019? I’ve been thinking, I could say/do 5 kind things a day, but I’m not sure if I’m on the right track. Thank you so much for your help!