I hope the Gumtree ad for the cleaning business provides you some more exposure:)
If it doesn't,would you consider another route such as creating logos and flyers for businesses,resume making service,running a class teaching older people how to use the internet, or even something such as a service pre-chopping vegetables for busy people (providing there is a market for this where you live)?
Or have you considered running a Jewellery business as sometimes they can have quite low overheads-depending on the type of jewellery-and particularly if you sell it from home,at the markets or through a Facebook store.
Is there a type of product,or clothing brand that is in high demand in your area but hard to find in the rural area that you live in?
Regarding your self worth -would you still feel this way about yourself if the people in your town didn't hold this negative prejudice?