As an Aries born on April 15th, your personality is defined by a fun-loving attitude, optimism and generosity. While there are many people who take a negative look towards life, you truly enjoy living and experiencing new things. You are always upbeat, which can be credited to your innate optimism. While your friends and family always marvel at your positivity, it may be your generous nature that they appreciate the most. One would be hard pressed to find a situation where you turned away a friend in need.