Hi Patricia, I too find myself struggling with guilt when I don't spend much time with my friends because of my physical limitations. My friends and family are supportive but they still sometimes forget what I can and can't do and it can be frustrating. However, I just keep reminding myself that my friends mean well (sometimes to cheer me up) but being a teen, I find young people don't really understand the concept of being chronically ill. To them, being sick is like catching a cold or flu where you eventually recover after a while.
Maybe a gentle reminder to your friends and family. Sometimes that's all it takes. I find that is something I have to do with my friends every now and again (esp. when they go shopping...lol (I don't last very long standing)