What If....

what if ... the worst word ... separated they only complete sentences, but together, these two simple words are dangerous, because you will always think about what could you have done but you did not, what might you have spoken, but you didn't said,  you will always be wondering how things would be now if you had done something different ... "what if ...", only two words that  can't come out of your head, and make you regret all ... the language is not something incredible? How simple words that when put side by side can mean so much ...