Building a consistently successful business as an Entrepreneur, essentially boils down to this..
If you're willing to go out and make 99 wrong-turns (give or take a few) in your pursuit of finding the one right one, then you have an excellent shot at building something that can earn money while you're not there. ..this is the mark of an Entrepreneur, as apposed to a freelancer.
What most individuals are looking for is 1 unit of effort that returns 10 units of profit, ..however, they fail to understand in the beginning, it's 10 units of effort for only 1 unit of profit, ..and that will likely go on for a year or two before that ratio flips in their favor.
What appears to be a puddle of water to walk across and pick the money up on the other side, turns into a deep, cold swimming pool once you're in it and after you've built a successful business and look back on what you've done, you realize it's the equivalent of swimming across the Gulf of Mexico.
You can see why most people fail.
What appears to be a 10k run they are preparing for, in reality is an Ironman triathlon.
The good news..
If you know what you're preparing for ahead of time, then you're 10 times more likely to succeed.
I give the following advice many times when entrepreneurs are starting out and they never believe me in the beginning, but two years later, they get it.
I say to them;
"Imagine the toughest you can possibly fathom that your business will be to start. ..as much time, effort, energy, blood, sweat and tears you can think of. ..then times that by 10, and by the time you build your successful business and look back on what you've done, you'll realize it was even 10 times tougher than you could have ever possibly imagined."
This advice is always met with disapproval, however it is the reality. On the plus side, it is also more rewarding on many levels than most could have imagined. When you put in the work to build something beautiful, (..beautiful to you), it's worth it.
Going out without a road map is the essence of what being an Entrepreneur is. On the one hand is an employee where work is brought to them and they complete the steps. It's a whole other direction completely when you're the sole and only one responsible for doing e v e r y t h i n g. (Product Creation, Marketing, R & D, Clerical, Customer Support, Webmaster, Legal Filings, etc.)
Note, just because you're an employee, doesn't mean you can't, and shouldn't, act like an Entrepreneur. My Dad, Ted, taught me this.. "..go looking for the toughest problems to solve at your company and you'll never be out of a job." As I've seen with my Dad, you'll also be well paid, and well respected.
Here is a video of Guy Kawasaki, (Entrepreneur, Author and one of the original guys at Apple) talking about the good things and bad things about starting a business when you understand how tough it is.