SK, I know I only know you from this forum, but this guy sounds like he's just going to set you back. Why would he tell someone with self-esteem issues that they're way worse than they already feel they are? That just sounds cruel and completely counterproductive. You're already destabilized from one session with him. I hope you would consider not going back for the second session at all. I would tell your current therapist exactly what happened in that session. Maybe she can help support you and encourage you not to return to this guy.