I read somewhere that at the age of 7, something in the brain allows us to feel regret. I don't know if that is true, but I find it interesting.
I always hear people saying "no regrets" but is that really possible? Most likely sometime, somewhere, somehow we would all do something that evoked the feeling.
I believe how you deal with the regret is the key. You can recognize it, acknowledge and learn from it or let it stifle you and render you stagnant.
You do have to stop wishing and waiting for things to happen, don't be scared to go out and do something. You have to take chances and yes regrets so you have the ability to grow and become a better version of yourself.
~miller & mom
If you catch the train to nowhere
You'll find the strangest man I've ever met,
Who claimed his ears were always ringing
With the sounds of his regret,
Back then time had not yet taught me
Regret was not a sound I knew,
So I thought nothing more than silence
Was left by things you didn't do,
He said he hoped the sound of nothing
Was the worst I ever heard,
Because regret drives you as crazy
As the taste of swallowed words,
"It's a stone thrown in a well" he mused
And this I've not forgotten:
"It's listening all your life
And never hearing it hit the bottom."