Out of a woman's heart

As I read Marks gospel yesterday, Jesus reminded me;

"There is nothing outside a person that by going into him can defile him, but the things that come out of a person are what defile him."

I've seen in my my thoughts and actions recently attitudes that look nothing like Jesus. Aren't we supposed to look more like him as we mature, I most certainly feel less like him than ever. How is this possible, has the sleep deprivation and the exhaustion of motherhood caused this? No. Jesus tells me that it comes from within me, out of my heart. These attitudes, the propensity for bitterness, selfishness, jealousy are all there in my heart, my circumstance merely provides the opportunity for them to surface. The fact that I hadn't expected it probably just shows that I still haven't comprehended the extent of my own sinfulness. But the more I see my sin, the more I realise my need for grace and the sweeter the gospel becomes. I have been trying to operate too much in my own strength, how could I forget so quickly that apart from him I can do nothing.