Remember what you loved doing as a child

• It ignores the market. Unless you have a trust fund waiting for you, you’ll have to feed yourself and others. 
• It will turn a passion into a job. 

1. Identify real needs in the market that are currently not being well met. 
2. Assess your strengths: Whatever is easy for you that most others have a harder time with, that’s a worthy option.
3. Match up these two in a constantly iterative process: This process takes many years if not decades.

Let’s say that your passion is playing the guitar. What void can you fill in that marketplace? For example, if you can repair guitars and realize that there isn’t a repair shop anywhere else around, that could be a business opportunity.

You also need to ask yourself how you can make the industry better.

Think of all the various ways that you can actually make money off your passion. This may include:

• Selling an actual product.
• Sharing your knowledge about your passion by blogging, writing books or filming videos. 
• Offering advice as a consultant in anything from accounting to gardening.
• Becoming an investor in an idea that you’re willing to financially support.
• Inventing a gadget or software that makes life easier for people. 
• Building an event around your passion, such as a festival or community organization.