is the trauma of having schizophrenia and the past experience affects ones carrier so badly that it

shatter ones confidence,determination and enthusiasm is almost lost.my sister came to know about having schizophrenia after one year of her treatment.she to some extent did her first job of telemarketing properly(at that didn't know she had schizophrenia).but after that she almost lost confidence and negativity about doing job unsuccesfuly came in her mind.  she added two more qualification(postgraduate diploma in bioinformatics and diploma in tourism in her academics. she has been taking medicine from last twelve years and still not confident of doing job sucessfuly.