It's so easy to forget to look after yourself sometimes...and things do look overwhelming when you are so busy and everyone needs a piece of you. There's been some great advice on this thread, so you know you aren't alone.
I try and break big jobs into smaller more manageable tasks and take 30mins every day to sew, potter outside or just sit and meditate (that's meditate...not stew over stuff!). Like many others I always have a portable, handwork piece to work on, so if I have appointments or have to wait around anywhere, I can chip away at my Grandmother's Flower Garden.
Hope you feel better soon.