Our expert says:
In the situation you describe, you obviously ARE contributing, and are NOT being a burden, but I understand that you might feel that way. And yes, a virtually isolated existence doesn't help one to become less shy.
Our readers may have useful advice, as many, I know, have dealt successfully with similar situations. Maybe first look not speicifically at what to study, but at what you'd like to be qualified to do, what sort of work-life you'd find fulfilling, though you're right that one needs to take into account employability and realisrtic job-opportunities. Studying 15th century Spanish poetry might be fun, but not too likely to lead to many job-offers.
As Maria and Purple say, there are psychologists and others who can perform tests that reveal both your range of interests and talents / competencies, and can based better career counselling on such results.
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