Part of being a man is learning to take responsibility for your successes and for your failures. You can't go blaming others or being jealous. Seeing somebody else's success as your failure is a cancerous way to live.

This quote means that as a man, you should take responsibility for the good and bad outcomes in your life. It is not acceptable to blame other people for failing or to feel jealous that someone else is successful. Being jealous of another person’s success will damage your life in a harmful way.