Tasks are created when we have an end goal in mind: things that need to be done in order to get there. This happens even at an unconscious level: when we have something that needs to be done, we automatically start doing tasks that will bring around that result.
When implemented at a conscious level, this means that after deciding what it is we want, we can then determine different tasks that need to be done in order to get there.
It is easy to confuse this with habits, and a difference needs to be made. For example I could have a goal of being fit, being able to run for a certain time or distance etc. I could then set a task of going to the gym. This however should not be a task, it should be a habit. Setting it as a task will create confusion, as you will have to keep ticking it off and then writing it again as a task for the next day.
A task is something that is done once and ticked off, a habit is something done every day (if not everyday, on a regular basis).
It is important to be able to differentiate between the two in order to avoid confusion when creating a task list, and repeating the same steps over and over.
There are certain things that we will need to train ourselves to become habits; a daily, or regular, activity that is necessary for the end goal to become attainable.
There are other things which will need to be done once and then ticked off: steps that will get us to the end result, but that do not need to be repeated. For example, learning about nutrition could be a task and then a stable diet could become a habit. With the end goal of being healthy. Skincare should be a daily habit, otherwise if it is as a task it will have to be ticked off every day. Learning about different skincare routines however is a once off thing that will be classified as a task.