Humility can be a sin, you know? And it's a curious one, because in its sinful form it comes as a sadistic method of self protection; you punch before others can, you assume the worst in order to lessen the blow. But if, after you punch yourself, others hit anyway, then you just hurt twice. And sometimes assuming the worst constitutes as the blow, causes the damage in the first place. You can speak unfavorably of yourself until so little is left that even love will sound unrecognisable, unbelievable, unlikely. When that happens, you will call yourself clingy, selfish, annoying, you will offer to pay penance for your percieved mistakes, and you will not be able to take "no" for an answer. If they refuse to be mad at you, to demand penance, you will nevertheless inflict it on yourself, because you have already, prematurely, decided you deserve it.
Humility becomes a sin in the form of insecurity, of envy, of self-consuming hatred - perhaps you'll find it easy to escape Pride, but all the more difficult to navigate the pitfall of Humility. After all, they are two coins of the same side. You may find yourself hungry for reassurance, driven by insecurity, tempted to ask your friends: Do you hate me?