I would recommend starting with your PCP Doc. That is where I started. It is difficult to admit to your doc that you need help. If it is the same doc that you have been with since your dx with UC then she will have a good understanding of what a chronic illness can do to a person. I have Crohn's Disease and so I understand feeling like life is beyond my control. Good luck and I hope you find the answers you are looking for.
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.