hello user, i understand your concerns , and it is appreciable that you are discussing your troubles despite such hardships - that means you have not given up all hopes - but a little bit of more will be required from you to fight this battle , like giving a visit to the psychiatrist who may optimise your dosage of sertraline as per your symptoms(the current dose does not seem apt) - but do not do it yourself - you may lend into trouble otherwise especially with your age - you can also consult any good psychologist for behavioural therapy - you can take help of any friend or family member or even neighbours in accompanying you - there is nothing wrong in asking help . Take care