I was like you, "behind" many years! My neighbor and I got together and spent a weekend sorting pix. We only kept what we were going to scrap. I got over the "chronological order" a long time ago! I'll group pix together of the "like event", ie: birthdays, Christmas, etc. I am a very "anal perfectionist" then it stop becoming fun!
My suggestion, find a friend who has never SB before, start w/the basics, enjoy yourselfs, laugh at old pix, place them on a page and viola' it'll come together! I have a "Family" album, 1 for my Dd and Ds and that's it! I started doing mini albums w/chipboard, and believe me, my DD snubbed her nose, but when she saw the "finished" product, she loved it and hated admitting it! It was a "Dance" book!
TAke a break, come back w/fresh eyes and imagination and DON'T STRESS!