I do not think I would change the past. But I would look more people in the eye. Much and intense. I would smile more often, thinking only of what is in front of me. I would tell them words that will remain impressed in their hearts and minds, and which would help them to go further today.
I would take advantage of every moment, every second, that I would have. Because yes, sometimes I let the time go by, thinking that in the future I will do what I would have done then. I knew then, and now I know tomorrow is not guaranteed to me by anyone. And yet I woke up postponing moments, people, feelings. For fear, embarrassment, unpreparedness. "Not now". But when?
Today I know I can not bring anything back. No moments, no people. But I know I can promise I'll be more careful about what's important. I will look more people in my eyes. I'll smile even more.