Boasting is not a good thing to do but when your boast is in the LORD it is the most appropriate thing to do as scriptures say, “If any man boasts let him boast in the LORD”

This is what the Lord says:

“Let not the wise boast of their wisdom or the strong boast of their strength
    or the rich boast of their riches,

but let the one who boasts boast about this:
    that they have the understanding to know me, that I am the Lord, who exercises kindness,
    justice and righteousness on earth, for in these I delight,” declares the Lord. Jer 9:23-24

Brothers and sisters, think of what you were when you were called. Not many of you were wise by human standards; not many were influential; not many were of noble birth. But God chose the foolish things of the world to shame the wise; God chose the weak things of the world to shame the strong. God chose the lowly things of this world and the despised things—and the things that are not—to nullify the things that are, so that no one may boast before him. It is because of him that you are in Christ Jesus, who has become for us wisdom from God—that is, our righteousness, holiness and redemption. Therefore, as it is written: “Let the one who boasts boast in the Lord.” 1 Cor 1:26-31