How much does a name change, given or surname, have an effect on ones personality, outlook or approach?

Two ways you may respond (this be general, attention):

Personal opinion and reflection based on personal experience (you changed your name, your mom changed her name, e.g.)

Learned opinion based on study, articles and include links. Bonus lurve for a professional opinion by someone who delves in, has studied numerology, Kabbalah, astrology or the thing that has to do with names (I’m too lazy to google – but Kabbalah is the best one for it, imho).