I haven't been able to read all the answers yet, but I wanted to tell you that you are not alone. Even though I have basically all day to SB, I get overwhelmed sometimes too, but please remember that a hobby is supposed to be fun, not stressful. I have a child, but I truly SB for myself. I love everything about it, it takes me away!!!
Just think that one day you may want to look back at your live and it'll all be there for you in pretty paper...
I agree that you shouldn't pressure yourself to scrap every picture. I do lots of pictures LO's because that's the way I like to do them, but I have the pictures I KNOW I'm not going to use in picture boxes and the ones that I haven't done yet on inexpensive pocket albums. This has helped a lot. I don't keep seeing the pictures of subjects that I have already scrapped, but I have the ones I still need to work on close by.
I don't know if you have nieces and/or nephews, but I had an aunt who I dearly loved and it makes me sad that I only have ONE picture of her. I'd have been glad to save all of her keepsakes had she saved them.
Hang in there!!!