Fully pursuing a business idea doesn't necessarily mean you have to go "all in". Depending on what this business idea is, it doesn't have to be an all or nothing proposition. This is where scaling your business comes in. You already know it is validated and people want it. Service THOSE people for a time. Make it easy for them to be advocates for you and your product/service. As the business grows, and if you have a way to hire more people to build and provide the product or service, you should quickly be able to get an idea when you should go "all in." Most of all, build systems to support the business and document processes and procedures. This way you can quickly bring new employees and customers on board without skipping a beat.

Call me to talk more about this. I'd love to learn more about your business idea.