Most people that are happily successful with their career and income have worked hard with passion. If you have passion for something that your good at then it will turn out to be fulfilling if you explore that passion. If you work with passion, good work comes out naturally. Good work means good pay also.
Like the writer of this blog, she has a passion of sharing her experiences and learning through blogs. She also loves educational toys that is why she started a small business about it. A work done with passion and hard work is like a baking a sweet exciting birthday cake. The outcome is surprisingly wonderful.