What happens when you do something as regularly as brushing your teeth?
At work, you become what is known as a consistent person. If you, for example, finish your tasks before deadlines almost always, you are likely to be asked few or no questions when you skip the deadline on that rare occasion. Even if you are probed for the reason, the concluding assessment for your delay is most likely to be pegged in your favour, maybe you were given less time, or there was too much for you to do.
Consistency is rewarded not just at work, but in your personal life as well in the form of good habits. Make it your top priority to be consistent as whatever you do, making consistency itself a habit. It will determine your progress every time you take up something new to do.