I don't think you sabotaged yourself. You met a childhood friend that knew you in ways most do not. Over the course of time the two of you spoke, you reengaged with those original feelings of connection that told you it was okay to speak open about such personal matters. Your life experience told you this person would understand your frame of mind. In other words friends who know the essence of who we are can differentiate a serious opinion versus an expression of frustration. If you know this person to fit that definition, then you're okay. You weren't gossiping, you were just venting to a trusted friend.