You don't think we'd all know it if "talking to a friend" for a couple of hours cured years of anxiety, depression, anger, sadness, hoplessness, anxiety, etc. ?

You don't think we'd all know it if "talking to a friend" for a couple of hours cured years of anxiety, depression, anger, sadness, hoplessness, anxiety, etc. ? Would we even have therapists/therapy if that were the case?