With each new day in Africa, a gazelle wakes up knowing he must outrun the fastest lion or perish. At the same time, a lion stirs and stretches, knowing he must outrun the fastest gazelle or starve. It's no different for the human race. Whether you consider yourself a gazelle or a lion, you have to run faster than others to survive.
Your competition is not other people but the time you kill, the ill will you create, the knowledge you neglect to learn, the connections you fail to build, the health you sacrifice along the path, your inability to generate ideas, the people around you who don't support and love your efforts, and whatever god you curse for your bad luck.