Change is not easy. If it was, we would all be able to do it and we wouldn't need the support of others or additional accountibility to make it happen. I believe it's best to approach any change with realistic, but hopeful expectations of what you're up against as you work to acheive your goals. It won't be easy, but it's not impossible either. Take any obstacles you face in stride, with a positive outlook and see what unfolds for you. I don't think you'll be disappointed.