Some good advice: http://www.lyricsfreak.com/p/paul+simon/50+ways+to+leave+your+lover_20105950.html http://www.lyricsfreak.com/p/paul+simon/50+ways+to+leave+you

Some good advice: http://www.lyricsfreak.com/p/paul+simon/50+ways+to+leave+your+lover_20105950.html http://www.lyricsfreak.com/p/paul+simon/50+ways+to+leave+you... I can't comment on (c) but: a: Just be open about your reasons. It isn't a personal attack to say someone is a slow/inefficient worker. b: Work away from the partner. I hope you aren't roommates c: Ideas aren't worth much, and it sounds like your friend isn't the competition to worry about. I would follow the advice you hear when you read about how to quit: be direct, polite, in a private/scheduled meeting, and open.