Yes but therapists aren't required to be accredited or certified in certain states. Even if you do have the fancy degree and certification, there's no guarantee that they will help you. I often that that you have to believe in their hocus pocus before it can be perceived to work. They give you books to read that you can buy on your own without their pricey sessions.
I think of them kind of like personal trainers, but for your psyche or your emotional self, instead of your physical body. Some personal trainers are great, and they customize what they do based on the client's emotional state of mind, physical abilities, etc, and who are very effective... and then there are trainers who do the same thing for every client, regardless, and so they're only effective with maybe 10% of their clients.
Different clients are looking for different things when they hire a trainer. Some clients just need someone to hold them accountable, someone they have to "report to" every week; some people need someone to motivate them and push them, because they aren't motivated enough on their own and they need someone to spur them, to challenge them; some people have hit a plateau, or they're already pretty fit, but they need a professional to get them to the next level; and finally, some people are totally fvcked and have no idea what they're doing, and they need someone to walk them through it step by step, and to teach them how to eat healthily and how to take care of their bodies. The trainer meets with them once, maybe twice a week, gives them homework assignments (do these workouts this week), and the next time they meet, the trainer assesses the client's progress and adjusts the workout regimen appropriately, and assigns new homework.
And then, there are some people who don't go to a trainer, because they can buy a book on nutrition and exercise and read it and teach themselves how to exercise and eat right. They can self-motivate, self-evaluate, self-adjust, and self-assign workouts.
The client is the one who actually does all the heavy lifting (literally); the trainer is there as a mentor, as a teacher, as a cheerleader, etc... whatever the client needs from the trainer.
And finally, there are people who don't need a trainer, because they learned early in life (likely from their FOO) the importance of maintaining a healthy body and diet, and they learned how from an early age, and they just do it out of habit.