Speaking directly about the title, it is true. Once you start something, it is the most important thing. It can be dropped at any moment if desired. However, t

Speaking directly about the title, it is true. Once you start something, it is the most important thing. It can be dropped at any moment if desired. However, the optimal path is towards completion. This means that you are unable to do something else. Thereby planning to do nothing else. You have to make sure you can focus on your task to completion. Otherwise, you will end up having to alternate tasks. Surprisingly, we alternate tasks constantly. Mainly, it is because of boredom, time constraints, or lack of capability(knowledge, power, resources, etc).