It's a business and you have control. That's an indie author in a nutshell.
Some contrast helps further define it. A traditional author may never get published. Most do not. But if they do then most, if not all, of the big decisions are made by others on your behalf. The publisher does most of the work and in exchange they keep most of the money too.
The odds of success are against you as an indie, but then the same is true as a trad author, only at a different stage of the game.
Success does happen, likely with the same odds as traditional publishing. Hugh Howey and Joe Konrath are a couple of big names in the indie world, well worth reading.
Now go write your book, and then start the business of selling your book. The world is your oyster.