So then, banish anxiety from your heart and cast off the troubles of your body, for youth and vigor are meaningless.
NIV
Therefore remove [the lusts that end in] sorrow and vexation from your heart and mind and put away evil from your body, for youth and the dawn of life are vanity [transitory, idle, empty, and devoid of truth]. [II Cor. 7:1; II Tim. 2:22.]AMP
Therefore remove sorrow from thy heart, and put away evil from thy flesh: for childhood and youth are vanity.
KJV
So I saw that there is nothing better for people than to enjoy their work, because that is their lot. For who can bring them to see what will happen after them?
NIV
So I saw that there is nothing better than that a man should rejoice in his own works, for that is his portion. For who shall bring him back to see what will happen after he is gone?
AMP
Wherefore I perceive that there is nothing better, than that a man should rejoice in his own works; for that is his portion: for who shall bring him to see what shall be after him?
KJV
People are praised according to their prudence, and those with warped minds are despised.
NIV
A man shall be commended according to his Wisdom [godly Wisdom, which is comprehensive insight into the ways and purposes of God], but he who is of a perverse heart shall be despised.
AMP
A man shall be commended according to his wisdom: but he that is of a perverse heart shall be despised.
KJV