I would suggest checking for physical symptoms and seeing a doctor first so see if you have any new medical problems creeping up on you.
I was misdiagnosed for 14 years because I did not do this. I have an autonomic nervous system disorder that was misdiagnosed as mood disorders and anxiety disorders. There are many physical health conditions that cause cognitive, emotional, and mood symptoms.
I had a great experience with cognitive behavioral therapy. It took 3 therapists to find one with an approach that was relevant and helpful to me. I highly recommend it to anyone who has access to it and can afford it, even if they don't have a mental health diagnosis.
