Do You Resent Your Partner?
Realize what's lacking. Resentment can stem from feelings of envy for someone else's life or emptiness in your own life. Pinpoint your resentment triggers and you may find out what you need deep down. Is it freedom? Influence? Attention? These things aren't necessarily bad things, and there are probably avenues to obtain them in a healthy way in your present situation.
Be good to yourself. Having some time to yourself is vital for your mental health, and to the process of shedding resentment. If you give yourself to others until you're burned out, you might end up resenting them for it. Spend quality time with friends and quiet time by yourself doing things that make you feel relaxed and happy.