May bodhichitta, precious and sublime,
Arise where it has not yet come to be;
And where it has arisen may it not decline,
But grow and flourish ever more and more.
Humility, however, should not be confused with low self-esteem. When Shantideva says he is 'destitute of learning and of skill with words,' he is not expressing self-contempt. The low self-esteem so common in the West rests on a fixed idea of personal inadequacy. Shantideva is committed to not getting trapped in such limiting identities.
As when a flash of lightning rends the night,
And in its glare shows all the dark black clouds had hid,
Likewise rarely, through the buddha's power,
Virtuous thoughts arise, brief and transient, in the world (Shantideva 1.5)
Once this bodhichitta thing is turned on, it's not going away. Turned on isn't right. There's always the possibility of illumination, but once illumination occurs, and is turned towards over and over, it becomes too strong to shut down. This is why I find it hard to say no. Chodron:
A great and unremitting stream,
A strength of wholesome merit,
Even during sleep and inattention,
Rises equal to the vastness of the sky (Sh. 1.19)
This is the happiness of egolessness. It's the joy of realizing there is no prison; there are only very strong habits, and no sane reason for strengthening them further. In essence these habits are insubstantial. Moreover, there is no solid self-identity or separateness. We've invented it all. It is this realization that we want for the endless multitude of beings.
And those who harbor evil in their minds
Against such lords of generosity, the Buddha's heirs,
Will stay in hell, the Mighty One has said,
For ages equal to the moments of their malice. (Sh. 1.34)