Trust is knowing that when a team member does push you, they're doing it because they care about the team.
Patrick LencioniAchieving vulnerability-based trust (where team members have overcome their need for invulnerability) is difficult because in the course of career advancement and education, most successful people learn to be competitive with their peers, and protective of their reputations. It is a challenge for them to turn those instincts off for the good of the team, but that is exactly what is required.
Patrick LencioniMembers of trusting teams admit weaknesses and mistakes, take risks in offering feedback and assistance, and focus time and energy on important issues, not politics.
Patrick Lencioni