Thanks to my friend I discovered an interesting site which can guess your character by your birth date. It seems that it works quite reasonable
Your Birthdate: March 6
You tend to be a the rock in relationships – people depend on you.
Thoughtful and caring, you often put others needs first.
You aren’t content to help those you know… you want to give to the world.
An idealist, you strive for positive change and dream about how much better things could be.
Your strength: Your intuition
Your weakness: You put yourself last
Your power color: Rose
Your power symbol: Cloud
Your power month: June