Don't get too wrapped up in size. A 22 foot boat not set up properly can be harder to singlehand than a 49 foot boat that is.
Lead your
lines aft. Get some
lazy jacks, a roller
furling jib and an auto pilot (FWIW, I don't have one but it would be nice). Set up your slip with some
lines to prevent the boat from running into the dock should you miss the
line. Learn how to use a
line amidships to catch a dock
cleat and tie up the boat until you get the rest of the lines on. Have plenty of
fenders.
Once you do it a few times, it'll be no big deal. Take another sailor with you who's instructions are to just ride along unless you really need a hand if it helps you feel better.
If I can single hand, anyone can.