When is intuition reliable?

One of the most successful women, a TV host, a producer and actress of African-American origin stated that for all major moves in her life she had trusted her instincts (and the times she didn’t, she made mistakes).

A well-known German scientist in his 50s claimed that he usually got insights from intuition rather than from logic, so he would often believe that he was right but would not know it. 

According to his colleagues and servants, a Prime Minister of the United Kingdom saved their lives when due to his intuition he ordered everyone to immediately leave the room.

The people behind these stories are Oprah Winfrey, Albert Einstein and Winston Churchill respectively, and it might look like they owed their success to their gut feeling. But how come intuition appears wrong when common people try to pick a lucky lottery ticket or choose a bank for investment? Is there an error just when it comes to money?