What one thing would you do over if you had the opportunity? That's the question at the heart of Kevin Hansen's bestseller, "Secret Regrets: What if you had a Second Chance?"

The book features regrets anonymously posted on his website, Secret Regrets. And, because they're fascinating to read -- and good food for thought -- each Monday at 11 Lemondrop will print the biggest regret of one 20-something woman.

Can you relate? Think she should have lived her life differently? By all means, discuss amongst yourselves in the comments. Here's this week's featured Secret Regret, brought to you by someone who, apparently, let him get away:

"I regret that you're better off without me. Seeing you doing better makes my heart hurt and knowing that no matter what would have happened this is the best for you. I lost so much of myself when I walked away from you. I regret that every time I say hello to you I want to say how much I have really missed you and I regret how much I want you back. It's almost been a year since I ended everything but I can still feel the happiness we shared and I wish that some day we could go back to the way we were. I think most of all I regret that I could never have made you as happy as you are now. I'm so sorry." -- anonymous, 22

Speaking of permanent regrets: Here's a tattoo that one woman would like a do-over on.