Setting written goals is the single most powerful action one can take towards self-improvement, business, or anything which requires you to grow.
Many well-known and successful people attribute much of their success to having clearly defined goals.
As a human, you are shaped by your surroundings, your environment, the people who you surround yourself with. It’s a culmination of these things that make you who your are. Before all those, your life is a blank canvas, and through time, you are gradually shaped into who you are now.