Modality is one of the most important factors to consider in astrology. There are three types of modality: cardinal, fixed, and mutable.
Cardinal signs are the initiators; they’re always the first sign in each season. They’re energetic and enthusiastic, and they like to get things moving. Fixed signs are stable and determined; they like to keep things consistent and resist change. Mutable signs are adaptable and flexible; they’re happy to go with the flow and change when necessary.
Each modality has its own strengths and weaknesses. Cardinal signs are great at starting new projects, but they can be impatient and lack focus. Fixed signs are reliable but can be inflexible. Mutable signs are versatile but can be indecisive.