Each habit needs an anchor, a specific preceding action. Tying habits to actions will give you a concrete reminder to begin the habit.
Anchors can be once a day: waking up, preparing for bed.
Or many times a day: walking into the kitchen, using the restroom.
It's important to choose an anchor that can directly lead into the habit you want to build.
I wanted to build a habit of exercise in the morning. I found that "after turning on the light" was more useful than "after waking up" because I couldn't exercise in the dark.
Where can you anchor your habits?