Alan Alda, , Actor and director said, "Laugh at yourself, but don't ever aim your doubt at yourself. Be bold. When you embark for strange places, don't leave any of yourself safely on shore. Have the nerve to go into unexplored territory."
Indeed, it is important not to take yourself too seriously. (It could give you extra wrinkles!) Also, not doubting at yourself is extremely important to make a successful journey though life. Go and discover new lands, new countries, friends, people, new cultures, new traditions, and ..new food! This will open your mind and understand better our world. Mind openness is essential in your existence, and will help you to succeed!