No matter your regrets, no matter your heart break, no matter your triumphs, no matter what happens in your life, be it good or bad; life goes on.
One of my residents joined the air force and was paralysed down the right side of her body due to a bomb attack. She regrets joining the air force, and if she could, she'd have changed things. Unfortunately for her, that's not the way things work in life, and she's a very bitter woman when she feels like it.
I met another lady through community care that had been married twice; her first husband, and I quote, "dropped dead." She remarried shortly after, and her second husband raised her children like his own. She was equally heart broken over her second husband's death as she was her first; after all, she loved them equally. She was lonely without them and missed them dearly. If she could have had more time with one of them, she would have. Unfortunately for her, that's not how the way things work in life.
Life doesn't care whether you have one regret, a million regrets, or none. Life doesn't care if you lived a happy life or a bitter one. Life hands you roses one at a time; sometimes you get the sweet smell, sometimes you get the sharp thorns. Either way, life keeps handing them to you, and the only time you stop receiving them is when you give up on life.