Of course they have a huge impact on your career. I was part of the team doing research on what is the most determinant factor in start up success... and the number 1 factor was self-efficacy. There is no doubt that our values and beliefs have direct impact. For instance if you lack integrity which is one of values people will stop doing business with you... there are millions examples out there... values and beliefs also determine our EQ.. something that some researchers believe have more impact on your career than IQ.