One of the biggest mistakes people make is, they don't educate themselves about music business! There are 10.0000000000 awesome guitarist in the world but only very few of them are successful. First thing you need to do is define the world success. Does this mean playing in a huge band touring the world? Or does it mean having a decent income form teaching guitar, or does it mean being the coolest studio musician that can nail what ever style the producer want. These are important questions that will help you define the steps you need to take. Most important think, whatever you decide, educate yourself about the industry you're about to enter!! Don't go there blindfolded and try to make it.