In the top right corner, you will see a wrench and the word Customize. Click on it. There will be four tabs for "Customize Fields". Click on the second tab - "Stay Well Strategies". In the bottom left corner, there is a PLUS sign. Click on it. It would enable you to name a new strategy for yourself. E.g. "routine sleep" (in addition to "adequate sleep" which is part of the default).

Let me know if it worked.