Denial denies that the truth is true.
Denial attempts to make something else be true, which is false.
Denial is a lie.
Denial is essentially the only ego device. It is another word for separation - the attempt to make the truth go away, to get rid of God, to kill of God's Son, to go unconscious.
You have to own up to and admit to everything, and that is an act of surrender. To stop denying the truth is to surrender or give up the ego position of fighting against it.
In the example of someone who has committed a crime but who is denying that they did it, until they are willing to surrender and stop hiding from the truth, they will maintain denial as a defense. To give up that denial is to admit the truth, which means surrendering to Authority. In the world this usually means the authority of others over them, to decide their fate, but psychologically is means surrendering to the Authority of God, which is a blessing.
Denial then is an authority problem, where you are attempting to have authority over the truth by redefining what it is and making it be something it is not. It's your ego's attempt to assert itself and make itself valid. To surrender to the truth, to God, is the undoing of the authority problem, the relinquishment of the ego, and is a rejoining of mind in wholeness.
To put down denial is to open up to God, to receive love, to accept reality, and to return to sanity. It means admitting that there is nothing you can do to make the truth be something it isn't, and to gladly accept it and welcome it as it is. That doesn't mean accepting that the world is real or that things in the world really are happening. That's not the truth. It means accepting that this world doesn't exist because God did not create it, and being untrue means there is no reason to be upset about it.
You cannot change the fact you live forever. You cannot undo eternal life, because it is immortality. Spirit is in a state of grace forever and has never changed. But you can deny it. You can pretend it is not true. You can try to avoid it, you can make-believe it isn't real, and you can weave illusions to try to make it seems like it isn't true. You can try to invent death and make death seem to happen. But you cannot kill what God created. Death isn't real and it never will be.
To die is to deny Real Life, and death is just a state of heavily denying what the truth is. Death therefore cannot be the truth, and must be reversible if you are willing to surrender the illusion of lies. Death, being denial, cannot be considered a true state, a final state, a whole state. It requires considerable effort to maintain, and cannot last. Like all things made without God, it has a limit to what it can seem to do. That is why the Spirit escapes it, and why we then have more lifetimes.
You can deny the truth up and down and left and right and pretend to be something you are not and try to die in every way imaginable, pretending you deserve it and make-believing it is justified, but it is always a state of lies. You simply are not being honest. The honest truth is that God has created you eternal and you cannot die and this world does not exist. So, what is there to be concerned about? Why pretend you are vulnerable? Why attempt to make out that you can be attacked? You are immortal spirit.