Building a habit means doing something every day until it’s secure.
How do you know your habit is secure?
When you wake up knowing that you’re going to complete it. Even better, when the knowledge is so firm that it doesn’t even enter conscious thought unless you ask the question?
Am I going to write today? Am I going to bake bread? Am I going to floss before bed? Am I going to practice that Bach Invention?
If you’re wondering whether the habit you’ve been forming is secure, ask the question upon waking, and see what response it brings. Did you wake up knowing the answer?