attain enlightenment

This needs to be a serious goal. One Buddhist monk said that if you don’t attain the first stage of enlightenment in this life you have wasted this human birth. And if you totally waste this human birth you can forget about getting another one.

The Buddha was perfectly enlightened.
His mind was completely at peace -
completely free of any form of sorrow, lamentation,
pain, grief and despair;
any form of selfishness or greed or craving or attachment;
any form of ill-will, resentment, aversion, hurt feelings, righteous indignation;
any form of delusion or ignorance which could lead to doubt and confusion;
any form of conceit or any conceiving of a self.
His mind was perfectly at peace,
abiding in complete knowledge of reality.