Prayer is supernatural work. Through prayer I seek to convert, sanctify and save my soul and the souls of others. This is the apostolate of those who pray: for conversion and sanctification of souls.
The more I pray, the more I will achieve. Sometimes I set aside prayer due to lukewarmness. Nevertheless, I strongly desire holiness, mine and that of others. So I endeavor to be an apostle more by prayer than by exterior action.
Prayer also adds to my exterior works. I should pray before taking action so that God will grant it success, the success that He desires.