Partially yes … the safety created by the therapist is a big factor in whether the client appreciates and benefits from the work.

At the same time, good therapy involves change … it involves RETRAINING your nervous system to respond in new ways to old situations. That experience will CERTAINLY be uncomfortable and destabilizing … if you don’t feel this “yuck” at times, your therapist is not very good …

If you feel TOO MUCH yuck, your therapist might be quite good in perturbing your baggage, but not good in regulating to your ideal pace … if this happens, a “homeostasis preservation” program in your nervous system will become activated and (in general), convince you to quit therapy …

What are the benefits of seeking therapy?

Homeostasis preservation


Original answer on Quora found here