Well the question is why do you do anything?Why be a lawyer or an accountant, etc. I know this sounds cliched and corny but you have to follow your heart. There is nothing as bad as being stuck in a job that you hate.
This is just my lay person's view. Maybe you could find a few psychologists on the website and write them an email. Ask them questions. I dont think you will be able to join them in practice but I am sure their input will be useful.