GOD'S WORD® Translation
Even though he blesses himself while he is alive (and they praise you when you do well for yourself),

American Standard Version
Though while he lived he blessed his soul (And men praise thee, when thou doest well to thyself,)

Berean Study Bible
Though in his lifetime he blesses his soul—and men praise you when you prosper—

Douay-Rheims Bible
For in his lifetime his soul will be blessed: and he will praise thee when thou shalt do well to him.

English Revised Version
Though while he lived he blessed his soul, and men praise thee, when thou doest well to thyself,

King James Bible
Though while he lived he blessed his soul: and men will praise thee, when thou doest well to thyself.

World English Bible
Though while he lived he blessed his soul-- and men praise you when you do well for yourself--

Young's Literal Translation
For his soul in his life he blesseth, (And they praise thee when thou dost well for thyself.)

Psalm 49:18 Additional Translations ...