Starting therapy and seeing a psychiatrist

Hi, I'm fairly new to the group and 7 Cups in general. I was introduced to this service via social media only recently, but I've struggled with depressive symptoms, suicidal ideation, self harm, and anxiety for 14 years. I've been taking anti depressants prescribed by an NP for the last 2-3 years, but lately they have not felt effective. This year I am seeing a psychiatrist for the first time. My first appointment is tomorrow and I'm very nervous and unsure of how it'll go. Has anyone else been in a similar situation who would care to share their story? Do you have any advice for me going forward? I would love to hear from you and talk to you if you're willing. Thank you.