In our modern lives/jobs, we often tend to (we're requested to?) aim for reaching a maximum in every situation. Though we're eventually wide of the mark in term of reaching any optimum.
There's a saying in French: "Le Mieux est l'ennemi du Bien". Read: Better is the enemy of good.
The bad news:
IMHO, ignoring this is a major cause of project fails (~70% - depending on the consulted source of information) and imbalance in teams.
The good news:
"Agile" is (not the only) one possible game saver in that matter, as it allows to better adapt goals and minds to the nowadays changing or hardly predictable conditions.
Though, (team) agility is creating new challenges since it relies on open-mindedness, good communication and positivity (*).
Teamwork should be positively emotional !
However, emotion jars with maximum...
The computer can't tell you the emotional story. It can give you the exact mathematical design, but what's missing is the eyebrows.
F. Zappa
(*) MAYDAY! I'm stuck in a paradox: I'm complaining about people whinging about everything :-D