I’ve always heard the saying, “If only I knew then what I know now!” Like most people, I’ve had this thought plenty over my 30-something-year-old life. For example: “Gosh, if only I could go back and tell myself how silly I looked that whole year of middle school when I refused to wear any color but shades of blue!” It was my signature color, after all. Still, it’s strange to finally have the opportunity to pen a letter to yourself detailing the things you wish you would have known, particularly through the lens of a cancer diagnosis. First and foremost- some background for those who don’t know me. Hi, my…