Passion alone isn't enough — the people who succeed at the hardest things are the ones who keep showing up, year after year.

• Grit means sticking with long-term goals, combining real passion with real, ongoing effort.
• Talented people often quit before less talented but grittier people, simply because they give up sooner.
• Success at anything difficult usually depends less on a single burst of effort, and more on years of steady showing up.
• Grit can be measured, and it often predicts success better than talent alone.