Lager, I used TO DO this ALL THE TIME:) I'd have a less than satisfying interaction with someone and the  way I handled it is to do EXACTLY what you've been doing. and of course I'd experience frustration, anger,etc also. Its an incredibly ineffective mental strategy albeit very well intentioned. and its got nothing to do with "a part of you" The better strategy is to stop the imaginary interactions(with any internal dialogue/monologue that probably goes with it) and start paying more attention to how you could conduct yourself so that you start having more satisfying relationships with the people you know .  and that begins with getting out of your head and then noticing the impact you have on people and changing your behavior accordingly. I'd suggest 2 things: 1)doing an NLP "uptime" exercise as the  alternative to doing these imaginary interactions Uptime exercise: a)start by describing VERBALLY 2 things you see in your VISUAL external environment, then 2 things you hear in your auditory external environment, then 2 things you feel tactilely. 2)REPEAT,this time with 3 things visually, 3auditory and 3 kinesthetically Once you've rehearsed this exercise enough, you'll be out of your head much more. then when time and $$$$ permit, go take an NLP Practitioner course from a credible trainer and learn how to verbally and nonverbally get rapport with people. hope that helps Jim R Houston TX