You are to believe! But it’s what you put your faith in, that’s what’s often left unsaid. And when the object of your faith is not clear, then your faith isn’t connected to the Lord.
The Apostle John says in his first Epistle, “This is the victory that has conquered the world: our faith” (1 John 5:4). If so, then it seems that all we have to do is have more faith.
If we believe more, if we have more faith, then faith will destroy our sinful urges.