Strive to enter through the narrow gate, for many, I tell you, will attempt to enter but will not be strong enough.
Who of us can enter on our own power? Sin clings to us, like oil floating on water that we wade through. We can not clean ourselves. As the psalm says
Too heavy for us our offenses, but you Oh Lord wipe them away.
There was song popular in the 1960s entitled knocking on heaven's door. Here's a recording of it by Bob Dylan:
But you can't get there under your own power. We are completely dependant on the Mercy of God who is very generous.
It is the Power of Christ working in us through the ministry of the Church by which we are made whole and made holy, that we enter through the narrow gate.
As Lumen Gentium says, Christ, by His passion, death and resurrection has opened the gate of heaven. He is himself the gate and the path that leads to the gate.
Let us strive to enter through the narrow gate, where we will be in the hand of God where no torment can touch us.