Last but not least, goals ensure that you get the best out of life.
Whether you want this or not, time will pass in your life. In 1 year's time, you'll be 1 year older. In 5 years', you'll be 5 years older. Goals with specific measures and deadlines ensure that you are maximizing your experience on earth. If you have already discovered your life purpose, your goals will help you get the best out of your purpose.