Growing in Servanthood

Serving others joyfully does not come naturally to me. It is not one of my gifts. But I wish it was... and I'm working on being better about it. God has really been speaking to my heart lately that I had fallen back into the trap of selfishness, which easily leads to bitterness and resentment if I'm not careful. I can start having thoughts such as "Why am I the only one that ever picks up around here?" or "When do I get a day off?" and those thoughts are very unhealthy for me. If I buy into those thoughts, I can become bitter toward my family and resent serving them. I become irritable and grumpy.