What would Greta do?
In a global world of constant information overflow, it's hard to make decisions according to your values. So often our values conflict. So often systems are too complex or not enough transparent to allow a proper decision-making process.
That's why we need new heroes, new role models. The idea of this shirt is to wear it, watch yourself in the mirror, and ask yourself: What would Greta do? What would my hero do? Then try to make this part of all decisions in your life.
1 hero won't be enough for all decisions. But 1 is enough to start.