The "Be a STAR" method of building trust divides the necessary trust-building behaviors into four action areas:
Be supportive

• Support your teammates.
• Acknowledge the skills and contributions of teammates.
• Demonstrate loyalty to your team.
• Give credit where it's due.
• Show you value your teammates' input.
• Let team members know you think they're competent.
• Involve your teammates in what you're doing.
• Help team members learn new skills.
• Give other team members responsibility.
• Let team members make decisions for themselves.
• Avoid speaking badly about teammates to non-team members.

Be truthful

• Be trustworthy in your communications.
• Say what you mean and mean what you say.
• Give constructive feedback.
• Admit mistakes.
• Maintain confidences.

Be accountable

• Don't shift the blame to someone else.
• Admit and take responsibility for your mistakes.
• Perceive everyone's mistakes, including your own, as team mistakes.
• Share the responsibility for everyone's actions.
• Address problems as a team.
• Learn from mistakes and then move on.

Be reliable

• Be consistent in matters both large and small.
• Follow through on commitments.
• Walk the talk.