If any of you lacks wisdom, let him ask God, who gives generously to all without reproach, and it will be given him. But let him ask in faith, with no doubting, for the one who doubts is like a wave of the sea that is driven and tossed by the wind.
James 1:5-6 ESV
Although these verses show a great promise, we must understand that this does not necessarily mean God will grant wisdom on how to pass a test, get promoted in your job or earn lots of money. No, rather this is wisdom how to navigate through and persevere in the midst of trials and ultimately bring Christ the glory He deserves.
What reassurance it gives us that God has promised us this! Let us continually pray for wisdom daily, that we so often lack.
Let us not forget that the Word of God is filled with boundless wisdom (particularly the book of Proverbs). Let us read and study the Word of God daily.