I too have Crohn's and have had major surgery 4 years ago. It nearly took my life and I have struggled with it and CD for many years. Therapy is a good step. It has helped me dramatically. I am on Yahoo IM if you would like to chat about my experience and how it might relate to yours.
We can respond to irritation with a smile instead of scowl, or by giving warm praise instead of icy indifference. By our being understanding instead of abrupt, others, in turn, may decide to hold on a little longer rather than to give way. Love, patience, and meekness can be just as contagious as rudeness and crudeness.