Do not let your negative thoughts have power over you because those thoughts will end up controlling your life. No one can live a positive life with a negative mind.
No one else has access to the world you carry around within yourself; you are its custodian and entrance. No one else can see the world the way you see it. No one else can feel your life the way you feel it. Thus it is impossible to ever compare two people because each stands on such different ground. When you compare yourself to others, you are inviting envy into your consciousness; it can be a dangerous and destructive guest.
Failures are the stairs we climb to reach success.
Don't blow off another's candle for it won't make yours shine brighter.