Guardian angels are there specially to look after our soul. They can also look after our bodies or prevent us from some physical harm, if that is according to the will of God. But their main goal is to look after our soul and our salvation.
How can they do so? They send thoughts, images or promptings to our minds. We can accept them or reject them. We can listen to them or ignore them. They respect our free will.
In my case, I lived for more than a decade in a sad state of permanent mortal sin. Through these years, I received random thoughts and promptings telling me to go to confession and that death is real and unpredictable. And what definitely confirmed me the existence of my guardian angel and his true influence on my life was the following story:
I’m a really absent-minded person. I forget many things. I have mistaken my home and my neighbours’. I’ve arrived my workplace with a tie and home slippers still on. One day, after forgetting to pray, I just decided to speak to my guardian angel, more or less in these business-like terms: “Look: I don’t know if you exist or not. But if you do, we both have the same goal: my salvation. If praying the Rosary is good for that, and if you exist, please, remind it to me until I die”
Since that night, I’ve been remembered to pray the Rosary every single day, multiple times each day. For more than 5 years in a row. Me, the same guy who forgets to put his shoes on!! And I’m convinced I’ll remember it until I die. I don’t always obey the thought of praying, though…