"Success" is different for individuals. It takes the passion to make it in the industry. You have to love what you are doing and know that hard times will come but if you love it you will keep on striving. Dedication is a must in the industry, dealing with creative critism also. To make it in the industry sometimes you have to take on non paying gigs but that the exposure will help you in obtaining that platform you need.
Some people think that the industry is all glamour but its alot of time and hard work involved. That its worth it?.... only you yourself will know if you love it... it's worth it.