Oh the agony.

I suppose taking a break up harshly is a normal thing.
I don't think that there is such a thing as an easy way to end things. One person always suffers more than the other.
Not to say that both parties involved aren't always in pain.
It's just more or less a thing of how you deal with it. One way is with grief, another with rage. But all in all. I think that the best way to deal with it is to move on. I know it is harder said than done, however, in the grand scheme of things, the only thing is learn from it and move on.
The subsequent decision one makes following a relationship are the true test of what you have learned.

Heartbreak is not an easy thing and as the Chinese saying goes, the best revenge is through success.
(My mother always used to say that revenge is like a dessert, best served cold.) So, immediate gratification through making bad decisions is an example of not learning from a relationship because the reality of it is, that hurting a person that you once loved is just as bad as hurting a person who you still love.

At the end of the day, it's important to realize that the other person is a person and people make mistakes. I hate that bad decisions are the only ones that stay prominent in ones mind initially though.

So if you can take one thing away from this it is, to simply wait it out, focus on goals, improve yourself. Better things are around the corner.

With this right now put it to rest,
the thing you love,
the thing you know best.

-Alan