Despite the tremendous obstacles, we can change. The ruts of sin do cut deep. Yet science ... shows us that our brains are highly flexible. They can change, even drastically so at older ages. The scientists say our brains are plastic. An apt metaphor. With heat and pressure, time and effort, we can be formed into new, spiritually healthy people. Using spiritual disciplines like deep, concentrated prayer, such as in contemplation or lectio divina, we can change brain patterns and open up new possibilities.

Rob Moll, "Your Body Won't Let You Keep Your Resolutions"
http://robmoll.com/2012/09/13/your-body-wont-let-you-keep-your-resolutions/