Nobody learns what he can do except by trying. - Seneca

For what else are you busied with except improving yourself every day, laying aside some error, and coming to understand that the faults which you attribute to circumstances are in yourself?

Anger does not care about itself, as long as it harms somebody else.

Everything of this sort is not anger, but the semblance of anger, like that of boys who want to beat the ground when they have fallen upon it, and who often do not even know why they are angry, but are merely angry without any reason or having received any injury, yet not without some semblance of injury received, or without some wish to exact a penalty for it.