Contractors are notorious for being disorganized. Many a contractor’s truck dashboard looks like a bomb went off in the front seat. Younger contractors tend to use smart phones and tablets, but many still suffer; just because you are strong electronically does not mean you have good administrative practices in your business.
If you are a disorganized person, start by accepting your fate. It is part of your personality, and you will live with it your entire life. Disorganized folks buy day timers they never use and put reminders on their phones that just get ignored.