The thing I'm often most aware of is that I'm grateful for being diagnosed at age 10. I've recently (last seven years) developed digestive problems (see separate thread). Thankfully not as bad as gastroparesis. At least not yet. But I have on several occasions become quite upset and depressed about it. I'm sure it's partly due to developing this problem in adulthood, after knowing my life and (relative) freedom beforehand. Another part of it, though, is that we very often take it for granted that we can eat what we like.
Ultimately, I know there's no point in my negative thoughts, as they won't change anything. If anything, they'll only make things worse. I just have to get on with it. Easier said than done, but we just have to keep reminding ourselves of the Stoic approach. Change what we can, and accept what we can't.