St. Michael, several times a day/as needed.
Mary, a whole lot.
St. Joseph, because I am a father, husband and my work involves tools and is often physical.
St. Ignatius of Loyola, my confirmation saint.
St. Antony of the Desert, to help me lead a spiritual life in the midst of being a modern man.
St. Therese of Liseux, St. John Paul II, St. Mother Teresa, both of whom I just have a personal devotion to.
St. Augustine, for continuing and deeper conversion.
St. Robert Bellarmine, because my name is Robert, I love the Jesuits and Bellarmine was a great teacher which is something I have a charism for.
I also ask for the intercession of Padre Pio when I go to confession, to help me make a good confession, and to St. John Vianney to intercede for my confessor.
There might be a few more but those are the main ones.