Emotions and logic are like lightning and thunder, respectively. You can feel something tremendous, and not be able to process what happened until much, much later.

You can't collect people and you'll lose all of them eventually, but still you shouldn't become jaded at the prospect of meeting new ones.

You need to take responsibility for your problems, even if they weren't initially your fault.

Feel your negative emotions. Roll around in them like a pig in filth. Acknowledge that they were there and existed at some point, and then let them go.