There are things you need to intentionally architect. And yes, I am using the word architect as a verb.
There are great ideas and there are mediocre ideas. But it's not so much about the idea, it is about the execution. Along the way to executing, you should expand your idea so that you have architected an idea model. An idea is great, an idea model helps you adjust and contextualize. Credit for this term and idea goes to Ben Arment and his book Dream Year.
Whether you like it or not, you won't be able to execute your idea or idea model by yourself. You will need a team of people. This structure should also be intentionally designed. You'll need your people - the people that will jump in and work in your passion. You also might need a team of advisers or directors. And you'll probably need a team of people to help you with the business end of things - budget, legal help, staffing. All of these teams will need to be designed.
Finally, you might need to architect your life. Your schedule. Your free time. Your career. Your finances. Your hobbies. Your patterns, rituals, and routines. Your values and non-negotiables. I'm not saying you cannot be spontaneous but clarity and thoughtfulness around what's important to you allows margin to do the things you love when the opportunity presents itself.
Great ideas, teams, visions and enterprises do not build themselves. They are built with intention and design, step by step, brick by brick.