Aquarius

The private rules you follow but never explain to anyone else are often the most sensible ones you have. They come from watching the same small failure repeat itself enough times that you finally decide to route around it entirely. You stop checking your phone after nine, or you never schedule anything important for Monday mornings, or you always buy the expensive version of the one thing that matters to your daily comfort. Other people might call these quirks, but you know they are the tax you pay upfront to avoid paying a much higher tax later. The rule works precisely because it stays yours.