All successful businesses, products, projects and artists have a foundation.
Most unsuccessful ones think they have a foundation.
The problem with thinking that you have a foundation is that foundations aren't built with thoughts, they are obvious, concrete and can be ran into; figuratively or physically.
One of the major problems is that people often think they are building a foundation by having meetings, conference calls, spreadsheets and discussing "next steps." Those may be an important part of designing a foundation early on, but they certainly do not build it.
Foundations are built with things that have shipped, been done, and decisions that have been made.
If you are building the foundation for a house, you can't pour idea concrete or place idea bricks and expect anything solid to come out of it. Bricks aren't made of thoughts, discussions or ideas, they are made of clay (or ceramic or a number of other materials) which is then molded, dried and heated. All actions.
If you are currently building a company, a project or yourself as an artist, think about the things you are doing as they relate to actually building a foundation. If you spend more time talking about building then actually building, you are probably just avoiding the fears that come with action. Do that and your foundation will never get built.
Enough with the meetings, go build your dream house.