A boring evening routine is a security guard for your peace.

Predictable endings to the day protect you from decisions at the hour you are least equipped to make them. A routine removes choices while your judgment is low, which is why the same dull sequence each night does more for your state than anything more interesting would. The boredom is the feature rather than the flaw.

Build a short sequence you can repeat without thinking and keep it the same on ordinary nights. Two or three steps is plenty. The value is not in any one of them, it is in not having to decide.