You have a gift that no one else has. You have a gift that is so unique to you the world is yearning for you to express it. You don't have to be a business owner or a Prime Minister to express it. You might express your gift with your children, your neighbours, and your friends.
You might express your gift through art, through law, through cooking, through teaching, through examplification (the way you behave). There are countless ways to express your gift.
Whatever your gift is, your purpose in life is to find it and use it. Don't waste it. The number one human regret is that we did't use our gifts. We regret that we lived our lives according to what other people wanted and expected of us, and we "forget" because we're so busy keeping everyone else happy, to honour our own uniqueness and greatness.