It seems that when Jerry Seinfeld was starting out, he got himself a big wall calendar draw a red X in the square for each day in which he sat down and wrote new material. He liked seeing a chain of red X's develop and used it as a motivational tactic. Don't break the chain!
You can use this same motivation to be more productive or healthier or what have you, but you don't necessarily need Jerry's wall calendar or red pen. With free iOS app Good Habits, you can use your iPhone to keep track of your chains, whether they're for writing the next Great American Sitcom or simply going to the gym regularly.
Good Habits makes it easy to add and track your various good habits. Tap the "+" button in the upper-right corner to create a new habit. When you do so, you can name the habit at the top of screen, and you can tap below it to set a reminder.
After naming a habit, you can use the calendar below to keep track of the chain, back-filling dates, if necessary, for a habit that you've already started. Tap the Back button in the upper-left corner to return to Good Habit's home screen that lists your habits.
Each habit gets its own color. Two numbers are listed to the right of each task. Your current chain is listed with the color background; your longest chain is listed with the gray background. To mark off a habit for the day, you can either tap to check the box from the main list, or you can tap to open a habit and then tap on today's date on the calendar.
Habits are scheduled on a daily schedule, so you can't, for instance, create a chain for going for a jog every other morning. You can, however, pause a task, which lets you skip a day and keep your chain intact. You can pause a habit by opening a habit and tapping the pause button in the upper-right corner. And once you have completed your novel or script, you can delete a habit by tapping the pause button and choosing the delete option.