“Build first, find a market later” mindset will kill your business
indiehackers.com
indiehackers.com
2. Make sure it's a common problem
3. Check that it is a valuable problem - lots of people forget this!
4. Solve the problem
5. Reach all the people with the problem using Sales and Marketing
6. Profit!
Additionally, What if your business is/was a little but “proactive” and created a problem to propose a solution for it later?
"A "face book" is a student directory featuring photos and personal information. In 2003, Harvard had only a paper version along with private online directories."