Remember that the feelings and actions of others are not within your control, and therefore you are blameless for them. You have within your power only your own thoughts and actions, and if these are true to the person you wish to be, then in the end you are undefeated.

To be sad at such a time is natural, and you will be in my thoughts. But the thing which is broken is not yourself, but something external to you. You yourself cannot be broken, unless you break yourself or allow another the power to break you.