Know your customers

This is probably the single most important thing for a business. The best
businesses understand their customers better than customers understand
themselves. We can see this by using some of the best products in our daily life.

These best products really get us and what we want. As users, we want to be
delighted more and more by great products that truly understand us. And we
are definitely willing to pay for those products that really matter to us.

Thinking from customers' angles is probably the greatest superpower.