Success in business takes work! And it takes the right kind of work. An online business or building a website is no different from building a physical business. Sales and Marketing (which are 2 entirely different things by the way) are the two areas which keep your business alive. Sales is harder than marketing because it involves the grunt work for the final conversion.
Lots of people focus on marketing efforts without a ‘sales process’ or jump to sales too fast. These mistakes result in very few sales, and business seems to be stuck.
A website, your product, a course and even marketing are just tools. You have to work them for them to work for you.