By only becoming aware of Krishna's greatness we can become aware of our minuteness. That's the way to become Humble.
If we are truly humble , we will co-operate.
If somebody praises us and if we have any humility we will feel totally like a fool.
What touches our hearts and impresses us deeper is sacrifice and humility, when we see someone accept the higher principle of cooperation, putting aside his/her own achievements.
Whoever we are, wherever we are, however we are, whatever our condition is, there is no impediment to attaining the perfection of life–if we are humble & sincere.
To protect any community, we need intelligence and to nourish it we need humility.