Enjoy the present moment instead of wasting it by trying to predict future unsavory events that may or may not happen. Focus on stuff that energizes you and propels you forward, not on stuff that makes you paranoid and terrified and covered in an alarming amount of hand sanitizer. If we do get hit by a giant piece of space debris or if your business does tank or if you do get your heart broken, so be it. All worrying will do is make you live through the misery twice.
