Capability

On Savoy Street, in London, cars drive on the right, not the left.

Have you ever stopped and considered how much you are able to do?

You are literate in at least one language.
You can walk.
You can climb stairs, ladders, hills, and maybe even cliffs.
You can use at least 16 hand tools competently, from a claw hammer to a garden rake.
You can operate any number of devices, ranging from light switches to DVD players. You operate at least 20 every day.
You know where to find information, both at a library and on the internet.

And this is just the beginning.
Go back over your life. Look at your old Scout/Guide uniform, and see what badges you earned. All that information is still lurking in your brain somewhere. Look at your sports trophies and club memberships.

You are a lot more capable than you think. Our society tends to make cogs out of us, arranging for us to perform only a few functions, day in and day out. But we are capable of more than that. We have options we don't even recognise.
Don't sell yourself short.