"8For by grace are ye saved through faith; and that not of...

"8For by grace are ye saved through faith; and that not of yourselves: it is the gift of God:
9Not of works, lest any man should boast."

May I suggest that you keep reading on from what you posted;

10 - For we are His workmanship, created in Christ Jesus for good works, which God prepared beforehand so that we would walk in them.

Hence, if you did any of these works which God prepared and you boasted, you wouldn't be boasting of yourself.