We must leave the things "of this world", those things that interfere with our path towards sanctity, no matter what they are, if we are to inherit eternal life. Christ does not tell us not to love the things that are good, but rather He instructs us not to love them "more than" we love Him. This teaching could be applied to many things.
Of course much can be, and indeed has been said about each preparatory Sunday—from the desire of Zacchaeus to the humble prayer of the publican to the repentance of the prodigal son, and finally with the clear teaching of the Lord as to what we need to do to inherit the Kingdom of Heaven. Today's theme, however is more frightening—the expulsion of Adam from Paradise.