There are two methods that I use...that being said I find it much easier to "meditate" when I am not on pain drugs, or anything mind-altering like xanax or vallium.
My favourite is a guided meditation software from the Wild Devine. It is a bit pricy, but I use it nearly everday for about 45 minutes to an hour. I like it.
That in combination with relaxing accupuncture. Tried accupuncture for the UC, but it really pumped up the symptoms. Now It is a relaxing 30 minutes designed for inner relaxation and balanced energy levels.
When I was feeling better footwise, I also liked Tai Chi.
Hope this helps