Stealing Souls, Satan can do it..can we? Options

I am curious, not because I am a satanist but because I really would want to do this. I always here of people (usually satanists) selling their souls or making a pact with a demon or something but is it possible for another human to infact give away their soul to another? My reasons for wanting to know your opinion are quite private but I just am wondering what you think.

i dont believe in whole soul stealing idea like we read in novels or see on movies.(eternal terminology drama) in previous posts ppl identified term soul with someones purpose in life, or giving soul-devoting self to that one goal, and along those lines i posted what you read above....yes- Reprogramming-my bad, (IMG:style_emoticons/default/happy100.gif) thanks.
what i was saying (and its 3.40am now here, i might sound even more confusing) about karma...i called it karma, lets say you change someones path to direction in way beneficial(or not) to you. (and now this could be really question of belief) you are creator of that persons 'new will' or goal, purpose, so all his acts would be considered as consequence of your act(reprogramming act), since he/she is acting in direction you set him/her to.
and how to do... creativity and frustration needed

i hope i made my previous post clearer if not maybe its for best (IMG:style_emoticons/default/laugh.gif)