It is a three minute prayer to help you stay in touch with the Trinity.
First Minute: Think about the greatest blessing you've received in the past
twenty-four hours and thank God the Father for that blessing.
Minute: Consider your most significant failing in the past twenty-four hours and
ask Jesus to forgive you.
Third Minute: Look ahead to the greatest
challenge that faces you in the next twenty-four hours and ask the Holy Spirit
to be your helper and guide as you accept that challenge.
"Use this prayer often, and you'll be more conscious of the reality that we are 'the temple of the living God'. (2 Cor 6:16)".
from We Worship: A Guide to the Catholic Mass by Oscar Lukefahr, C.M.
For more info: http://www.amm.org/chss.htm I highly recommend this free course. ECG