Agent Foxtrot

Hello, first-time poster here. I am freshly graduated from my psychology program and enrolled in my graduate MSW program. I am applying for my first job in the field as a residential counselor for mentally ill adults. I don't have any job experience in this field yet, but I DO have a mentally ill father who for years has depended on me for help with multiple life maintenance tasks that parallel the new job requirements.Should I mention in my cover letter that I am taking care of my sick dad and that it's given me years worth of similar experience? Or would that be TMI for an employer?Thank you.