Before Our Lord

It is related of St Catherine of Siena, who was also favoured with the visible presence of her Guardian Angel, that once while praying in the church she turned her head slightly to gratify her curiosity.Her Guardian Angel gave her so severe a look for her disrespect in the presence of the Most Holy that for several days St Catherine was inconsolable and performed severe penance in atonement.

wow.

I heard this several weeks ago but I cant stop thinking about it; I am trying to be less distracted when I am in adoration, at Mass or in front of the tabernacle, and more acutely aware that JESUS IS THERE and HE deserves my full attention.

I can't satisfy my curiosity of 'who has just walked into the Church? ' or 'who is making that noise' if it means turning around and losing my focus on HIM, who is truely present in front of me.
My noseyness is not more important than Jesus's presence.

St. Pio ('Padre Pio') wrote a beautiful letter describing how we should compose ourselves inside and outside a Church:

Here is one small section:

Then take holy water and make the sign of the cross carefully and slowly.

As soon as you are before God in the Blessed Sacrament, devoutly genuflect. Once you have found your place, kneel down and render the tribute of your presence and devotion to Jesus in the Blessed Sacrament. Confide all your needs to him along with those of others. Speak to him with filial abandonment, give free rein to your heart and give him complete freedom to work in you as he thinks best.

When assisting at Holy Mass and the sacred functions, be very composed when standing up, kneeling down, and sitting, and carry out every religious act with the greatest devotion. Be modest in your glances; don't turn your head here and there to see who enters and leaves. Don't laugh, out of reverence for this holy place and also out of respect for those who are near you. Try not to speak to anybody, except when charity or strict necessity requests this.

If you pray with others, say the words of the prayer distinctly, observe the pauses well and never hurry.

In short, behave in such a way that all present are edified by it and, through you, are urged to glorify and love the heavenly Father.

Read rest here