After several years of struggling mightily with decisions like this, Charles decides to start psychoanalytic psychotherapy. Right away, Charles's therapist has him say whatever comes to mind, without restraint. This is most likely an example of:

The answer is Free association.

Explanation:

Free association refers to the expression of aspects related to consciousness without censorship. This is used as an aid to obtain access to unconscious processes. This technique is usually utilized in psychoanalysis which was established by Sigmund Freud.

Freud made this technique as an alternative related to hypnosis and because he saw that free association gave more fallibility, as well as patients could understand crucial memories while they were completely conscious.