The 12 Houses
The planet and the sign tells a story of the personality. For example, Sun in Aquarius makes you rebellious and emotionally detached. But where does the personality show up? The house that the planet shows up in tells a story of where that energy is supposed to be activated in your life. For example, if your Sun in Aquarius lies in the 10th House of Social Status, you will use your rebellious and detached spirit to gain success and respect in your public life. Or as a counterexample, if your Sun in Aquarius lies in the 3rd House of Communication, you will use your rebellious and detached spirit to communicate a message with the rest of the world.