One of the first steps to success is realizing how much practice professional singers do. I know you don't see it all the time, but every great singer out there has put in a ton of hard work.
They have practiced for hours and hours. The thing is, we don't see that. We only see them perform on stage. We don't see them training and practicing.
It's also important to remember that almost every great performer has some type of coach or program they follow. So if you think you can be some great singer and not practice or not get lessons, you're fooling yourself.