A promise to your spouse is a kind and generous behavior.  In a typical marriage, day-in and day-out, we agree to do things for our spouse that they are counting on.  Try not to let them down -- do follow through as best you can to do what you've said you will do.  Over time, your partner will love that they can count on you (breaking promises, on the other hand, will only build anger and resentment).  

Two tips: have a system to help you remember, and never agree to anything just to avoid conflict (knowing that you don't intend to follow through).

Try over the next week to have a perfect score!