Everyone has an affect on your life. They either move you forwards, or hold you back. Your rate of progression as a person is simply the sum of all of the people around you. Too many bad apples and you'll be stagnant or even regressing along your path. Enough good apples and you'll be progressing along it. But even if you are moving forwards, how much faster could you go? Free yourself from those who burden you and surround yourself only with those who fuel your life.