It’s never too late to try to switch careers, according to this post. Actually, she says 107 is too late. The keys are that you have to be sold on the career change and you can’t rely on submitting resumes to get you a job. You have to go about it the right way.
Employers only pay recruiters to find candidates whose resumes match the job spec exactly. Your best channels will be networking and the direct approach, called the Whole Person Job Search.
How does that channel work?
You’ll write a Human-Voiced Resume that makes it clear not only how your therapy background meshes beautifully with the jobs you’re pursuing, but also makes clear why you want to get into Sales, or HR, or whatever you decide to focus on. Then you’ll write a Pain Letter, which is a bit like a cover letter but much more focused on the specific manager you’re writing to, and his or her pain — the reason to hire you.