Focus on who the person is today, not their future potential.
In relationships we become frustrated with the other person because we feel they are not living up to their potential. When you solely focus on the person you want them to be rather than the person they are right this second, you will find you are always frustrated. There is nothing wrong with wanting your relationship to grow, but you can’t make someone become the person you want them to be based off of how you see their potential.