"I can promote until I am blue in the face, but ultimately nobody knows what makes a hit"

In this quote, actor Christian Slater is expressing the idea that no matter how much effort and promo is taken into a task, there is no warranty that it will achieve success. He utilizes the phrase "blue in the face" to convey the concept of fatigue and aggravation from constantly promoting something. Despite his best efforts, he acknowledges that the supreme determining factor of a hit is unknown. This quote highlights the unforeseeable nature of success and the awareness that even with hard work and dedication, there are particular components that are out of our control.