Alma 4:19

"...that he might pull down, by the word of God, all the pride and craftiness and all the contentions which were among his people. seeing no way that he might reclaim them save it were in bearing down in pure testimony against them."

The antidote of pride is the word of God.  Alma realized that the Church was being infected with pride, so he  dedicated his time to preaching and sharing his testimony in hopes that it would create a change in the people.  Pride harms progress and prevents the spread of charity.