Have you ever seen a little girl run and then fell to the ground? Bruised knees, dirty palms. They would cry loudly, like it's the greatest pain ever exists. Their cheeks would be full of tears and turn red. But hey, give her a tight hug, wipe her tears. She might not stop crying, but at least she would feel better. And then give her a lollipop, the colorful one. A smile's created. She would suddenly be happy like she forgot all the pains she had had before. But remember, don't ever try to let her see the bruised knees anymore, as you should cover it with a band-aid. Pains disappear. Bad memories fadeaway.
So here is the lesson:
Be easy to be happy like a little girl. Be easy to move on from sorrows, or anything bad that might ever break you in the past. Forget it, but learn from it. Learn not to run too fast cause you may fall down. Learn what are the mistakes you had did that it caused some disadvantages. "You can't change the past, but you can learn from it and make a better future."