I left everything in my life behind and don't regret a thing
Why would you walk away from it all?
I don't have a life anymore so I might as well leave everything behind.
Well, why should you be tied down to mistakes from your past, right?  If you want to make a new life, get out there and get started on it.  I believe in you!
Thanks. I'll do that.
On the other hand, make sure you aren't running away from something important either. Especially, something that could hurt others or come back to haunt you.