Gary,
When you take vows in the Holy Family Institute, you are making an act of religion. That means that your spiritual life becomes much more valuable. All your prayers and actions will then be totally directed towards God. Fr. Tom often writes that if you compare a good Catholic who is part of this ministry and that ministry and prays daily and is close to God to an HFI member, the spiritual life of the HFI is actually better. Religious brothers and sisters take vows - what makes them spiritually closer to God? Their consecration! Also, members of the Holy Family Institute and the Pauline family will be praying for you in life and after death. Another plus is the monthly personal spiritual direction you will receive from Fr. Tom.
About what you need to do every day…just like every religious order has a statute and set of prayers prayed everyday, so do HFI members. All the mailings I receive from HFI really help me in my spiritual walk with God. Since the apostolate of the Pauline family is evangelization through the mass media, you are directing your daily prayers and good works towards that goal.