Every world-changing company starts as a spark—an idea scribbled on a napkin, a problem begging to be solved. But vision alone doesn’t build a business. Today’s most successful founders know that ...

Across the country, a typical day of an after-school educator is split between instructing students and managing an endless stream of phone calls, invoices, scheduling changes, and parent emails. Many ...

This as-told-to essay is based on a conversation with Ace Yip He Hua, an 18-year-old founder and final year student at a high school in Singapore. The following has been edited for length and clarity.