Your desire to be generous to others is a great motivator to excellence: if you’re serious about ensuring that the externalities of your project are consistently positive, you’re going to need to be doubly good at what you do.
You need emotional energy and time to spare to listen well, to be gracious under pressure, to be the kind of employer or customer that helps your team or partners to do their best work.
It takes discipline to do this kind of emotional labour day in, day out. You need to be clear about what you’re doing and how and why, plan for it, and be deliberate about doing it consistently. You need to find ways to articulate your values to people inside and outside your project.
You need to be hard-headed about being soft-hearted.