Even if you want to talk about something you did every day in the Past, you treat this as a single action that happened on a regular basis. For example, I walked to school every day. This is because you are focusing on a reoccurring completed action. In this case, your Reference Point (R) is a completed action that happened repeatedly in the past (Diagram 3):

No matter what information we add, the Core Characteristic of the Past Simple remains the same, as we can see from our Reference Points. The Past Simple is the basis for providing information about a completed action at some time in the Past. In our sections on Locations in Time and Duration of Actions, you will see how the addition of other information can help you get the most out of this tense.