I sometimes get email letters from beginning CNC machinists thanking me for making the FSWizard Online Speed and Feed Calculator available for free and asking for some tips and hints.
I always answer and try to encourage people.
Looking at my own CNC career I realize that the thing that is making me successful in my eyes is my own laziness.
Because of how lazy I am I always try to make things the fastest and easiest way possible.
At my previous day job I earned several awards for improving various processes many times saving the company thousands of dollars and many man-hours as a result.
So the main advice I have for those willing to advance is "be lazy"
Always try to improve on your work and make things work faster and better, so you do not have to work hard. If you are successful, your boss will notice.
Bill Gates - the founder of Microsoft once said that he would always give the hard jobs to lazy people, because they always manage to find ways to do them easy.