Not with individual one-on-one therapy, but I've been in partial hospitalization programs several times where this happened. At the beginning, I would find all the group therapy sessions very interesting and almost wished I was there for more hours of the day to get more out of it. There would always come a time though where I'd start to get really bored and impatient during groups. This was always how I knew I was progressing and closer to being ready to leave the program.