Searching For Longitudinal Mental Health Dataset

I’m searching for a longitudinal dataset with mental health data. It needs to have something that can be linguistically analyzed, so a daily diary entry, writing prompt, or even patient-therapist transcripts. I’m not too picky on timeframe or disorder, I just want to see if something is out there and available for public use. If anyone is aware of any datasets like this or forums that might be helpful, I would appreciate the help. I’ve done some searching and so far haven’t found much.

Thank you in advance!