While you don’t explicitly state that the two categories – friends/colleages vs. admirers – are disjoint, your wording suggests to me you might – subconsciously, perhaps – sometimes think they are.

If so, fiddlesticks! There’s little harm in admiring your friends or colleagues or in them admiring you, as long as it doesn’t get out of hand. Uncritical admiration is foolhardy, but the kind of admiration we feel for someone who’s doing things we think are worth doing is healthy, and can strengthen – rather than weaken – personal and professional relationships.