Since building something is only 10% of the battle (if that) you're going to want to apply the same general techniques to the other things -- web design, marketing, support, etc.

My favorite three words are "Automate, outsource, and eliminate". If neither you nor your customers require your personal attention to X, you should ideally not be X-ing, because you and your customers require your personal attention on enough things as it is.

[Incidentally: Telling your parents and friends about your internal deadlines as a motivational tool is pretty useful. Telling your customers is a great way to get unproductively stressed when life gets in the way. Your parents and friends will still be there later if your schedule slips a week because your girlfriend needed more face time. Your customers, on the other hand, tend to be a little more insistent that when you tell them 2.0 is coming out on July 1st that it is actually out on July 1st.]