Ben,
I really don't think you are a captive in your house. Laying around half the day watching TV is slothful. Please go outside. Walk, run, ride a bike, hike, fly a kite, volunteer, paint a house, teach computers at the library, man... anything! Especially in a small town where a gesture can seem much bigger. You have a lot to offer, please don't keep it to yourself.
And don't feel alone. As you can see, others have walked your path before. We're here to help.