Working in that way with Simon Sinek's approach (in example by using the task: Task: Start with "Why") has the advantage of reaching out to other people in a very understandable and efficient way. We start with our beliefs and feelings, which are strongly responsible for empathy and behavior. Then we allow people to rationalize it with the tangible things we say and do. What we do serves as the proof of what we believe.
The goal is not just to find people who need something from us or from the initiative; it's to find people who share our beliefs. If your participants take people on board a project just because they can do a job, they'll work for monetary gratification. But if team members or supporters share beliefs, they'll work with passion and commitment.