Your date of birth defines your role and character for this incarnation. It's a complex interconnected net composed of various energies, each representing a specific lesson or task you need to take. Like anything else in this world, these energies have a dual or polar nature and can exist in a positive or negative state at any given moment: greedy person has potential to overcome this given karma and become generous; lazy person task would be to become active, etc. Also, people may experience similar situations with different levels of ease or difficulty. Some lessons are quickly learned, while others take more time and effort, explaining why people with similar birth dates may have entirely different life paths and destinies.