Share one sentence that you learned in years of entrepreneurship

i am writing this post to get some knowledge, thoughts and if possible, share some learning from everyone who is interested in being successful in business or startup.

I can see many people are building, sharing, and at the end, including me, facing down because no one or at least not many, as you imagined or expected use your tool or even really cares about the idea or solution you provide. i have +10 yrs experiences in software engineering, enterpernuers and stratup and i am wondering what we all miss out to be successful or if you are now, what can make it more.

I will go first, with one sentence: Bring Real Value to Users.