For example, let's say a person loves music and loves playing the guitar. I can guarantee you they'd be more successful (and much happier) if they started a guitar store, music store, software for learning the guitar, etc. Because they'll love the people they interact with, being around music all day, helping people who also love guitars, etc. If you truly love food and feeding people, consider the myriad businesses associated with food, hospitality, etc.
So the real question should be -- HOW DO YOU TURN WHAT YOU LOVE INTO A SUCCESSFUL BUSINESS?
I know -- that sounds simple... yet, very few people follow this simple rule. How many times have we all heard -- Do what you love and the money will come... it's true!!!
So if you want to start a successful business, trust me -- first figure out what you truly love to do, love to read about, love to learn about, etc. Does this guarantee success? No, but I can assure you that doing something you DON'T love is a guarantee for failure.