Regardless of anything else, these two statements need to be a part of a successful entrepreneurial endeavor.

A$.$

$1)$ With passion for a service or product, you can make anything happen. $2)$ In entrepreneurship, people will always buy into your passion.

B$.$

$1)$ There is one major approach to organize the effort of planning, launching and building a venture. $2)$ Alway follow this approach for success.

C$.$

$1)$ Entrepreneurship begins with the recognition of a real need. You change the world by tapping into an unmet need with a compelling solution. $-$ Solve a problem or provide for a need. $2)$ Successful entrepreneurship requires a resource efficient path to a viable business model. Regardless of the business type, you must have a business model that meets client needs and funds the operation. $$ Part people from their money and fund the operation.

D$.$

$1)$ Never give up on your idea. You can always educate potential investors and clients into support if you simply stick with your idea. $2)$ Tenacity always wins.