Though the name Zac creates the urge to be creative and original, we stress through a scattered and emotional nature, you suffer frustration. This name, when combined with the last name, can frustrate happiness, contentment, and success, as well as cause health weaknesses in the liver, bloodstream, and in tension or accidents to the head.
Zac as a first name gives you a very independent nature, yet you are friendly, approachable, and generous. You can be a spontaneous, expressive, and talkative person. Generally you are good-natured, though at times you can be rather blunt and sarcastic.
This name incorporates creative, artistic, and musical abilities, and there would be an element of originality in all that you do. You like to do things on the spur of the moment without planning or prior arrangements. Your spirits are buoyed up greatly by encouragement and appreciation. Your full name creates the overall conditions in your life as well as your destiny. It is a very important factor.

[Source: Kabalarians]