The core of your business is the main values it stands for and what its purpose is. Think about the specific impact you want to have on people and the world. Why does the company exist? Keep the core in mind while still innovating to provide people with new services. If you fail to innovate, people become bored.
If you want to start an affiliate marketing business in the baking cookies niche, then stick with it until it's successful. Don't start new websites. Focus on that ONE website until it's successful. Only then can you think of starting new ventures.
Things will fall into place for you when you direct your energy, maintain burning passion, unite people, and lead people all around believing in something.