Reddit mentions of Building Your Ideal Private Practice: A Guide for Therapists and Other Healing Professionals

Very few psychologists received any training in running a private practice (or anything business related) in graduate school. Most psychologists I know (myself included) have to make it all up as they go along, with varying levels of success. For me, the "easiest" part has actually been getting clients (way easier than I thought it would be). The hardest part, surprisingly, has been meeting other therapists. I'm a pediatric neuropsychologist, so I need therapists to refer to when I recommend that a kiddo should start therapy, and it is very difficult for me to build up a list of practitioners to refer to. And when I finally do find a therapist that I want to refer to, he or she doesn't have any openings. I've tried meetup groups (even started my own) and state/local agencies, but it's still been really slow going building a professional network.

More recently, some therapists have begun writing books about running a private practice specifically to address this gap in our education. There are also some websites/bloggers that address this topic as well. Try things like Casey Truffo's Be a Wealthy Therapist , Lynn Grodzki's Building Your Ideal Private Practice, or David Diana's Marketing for Mental Health Professionals... if you check those out on amazon you'll also see many other similar titles.