Is it easy or hard to commit a mortal sin?

For someone who is very sensitive and scrupulous, it is very hard to commit a mortal sin, because he has trained himself to watch himself every day, twenty-four seven. People slip, but the majority stay on the path; they are examples of what 1 John says, that he who loves God does not sin, meaning he does not practice sin, and that will go on for years, from the time you grasp Jesus until you die. Of course, John also says that if we claim we have no sin, we deceive ourselves, so there are two sides to the coin. But for the person who loves God, it is very hard to fall into mortal sin. On the other hand, for someone living a worldly life, who treats Sunday Mass as optional, who does not pray daily, who is Catholic and baptized and has a good name and profession but is not really close to God, it is easy to fall into mortal sin, because he will go to places, take jobs, and associate with people who drag him away from Christ. I can see how easy it would be for such a person to hold what looks like a respectable life and then slip at a party where there is drinking, drugs, or beautiful women, because he has not prepared himself and has put himself right in the midst of the sin. But for someone committed to Jesus Christ and following what He says, it will be hard for him to commit a mortal sin.