That's how I feel!
Since he left, I've lost weight, exercise regularly (I have muscles!), eat healthily, have quit smoking, meditate regularly and am starting up a business venture that I'm really excited about.
I've gone out and made new friends - smart, successful, talented people, and I'm actually really excited for the future.
Sure, occasionally, I get down and find myself ruminating, but I work through it in the knowledge that I really am better off without him.
He actually made contact last week and rather than hitting a low, I saw in just a few short text exchanges what a nasty, mean and bitter human being he is. It took a few bad dreams and a lot of meditation before I got back on that positive track, but yeah - I'm finally starting to see that I deserve a whole lot better than my ex. I'm even starting to feel sorry for his new g/f. But not that much,

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Keep looking forward and focus your energies on the future!