My theory on life is that life is beautiful. Life doesn't change. You have a day, and a night, and a month, and a year. We people change - we can be miserable or we can be happy. It's what you make of your life.
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.