SwissMiss points to a great infographic about how professional photographers actually spend their time.
Part of the magic (and the risk) of the internet is that if you want to, you can use your access to tools, markets and media to go even further in the direction of the chart on the right. You can become your own booker, accountant, publicist and more. Hey, it's free! You get to keep all the money!
Of course, it also means you don't get to spend very much time at all doing what you set out to do in the first place, which is shoot pictures, or write music or coach or whatever it was.
The other thing you can do is find the guts and resources to move even more to the left. Hire other people (at huge expense) to do all those things you certainly could do on your own, so you can actually do the work you were born to do.
One thing to consider: finding and retaining a great salesperson is more difficult than you might think, since a great salesperson might very well contribute even more value than you do.