Is it possible to change or work on a negative symptom of schizophrenia

I just copied this from the internet it is one of the negative symptoms of schizophrenia that I want to work on.... person may have a lack of interest in activities that previously were important to them such as their work or studies or recreational activities such as sports. They may also stop looking after themselves properly and their personal hygiene and appearance may suffer noticeably. They may be reluctant to leave the house or even their bedroom and may lie in bed for the larger part of the day.