Are we all equal? No we are not. Each of us is a unique individual with our own God given talents. We react differently. Our perceptions are different.
What makes us different? Our freedom of choice makes us who we are.
Accept that life is not fair or that everybody is NOT treated equally. You yourself do not treat everybody equally. You have your own favorites. Rise above all your bitterness, complaints and failures and stay focused on making your life better while never depriving others.