How? Do what makes you happy. That is how you become successful in business. When you focus on doing what makes you happy, you in turn become successful. You begin attracting people who want to purchase what you are offering. People love doing business with happy people. They can feel that you are happy doing what you do, so they feel happy too. 

Remember this, your job is to focus on what makes you happy. Don't focus on the details, just do what makes you happy everyday and success will follow. No matter how hard it gets keep doing you.