Lovely character doesn’t guarantee success, therefore sometimes you have to kick out those who don’t contribute to meetings. (Personal experience)
However, hard-style with core brainpower doesn’t guarantee success neither, since not everyone equips the equivalent power level.
Balance is important on a basis of sufficient logics (cold-headed).
Eventually what really makes people to love you is how efficiently you can help them get what they want!
(Harsh words, real world)