1. When you exist, your death does not, and what does not exist can't harm you.

2. When your death exists, you do not, and what does not exist cannot be harmed.

3. It is irrational to fear what can't harm you.

4. It is irrational to fear when you can't be harmed.

5. At any time, either you exist or death exists.

6.Thus, for any time, either death can't harm you, or you can't be harmed by death.

Therefore,

7. It is irrational at any time to fear death.

"Weep not for him who departs from life, for there is no suffering beyond death." -Palladas.

Here is a suicide not from Charlotte Perkins Gilman:

"Human life consists in mutual service. So grief, pain misfortune, or 'broken heart' is no excuse for cutting off one's life while any power of service remains. But when all usefulness is over, when one is assured of an unavoidable and imminent death, it is the simplest of human rights to choose a quick and easy death in place of a slow and horrible one."

I've already read that you said you weren't going to commit suicide. That is good. Everyone's life is in their own hands, do with it what you will. I'll leave you with this...

"There was a time when we were not: this gives us no concern - why then should it trouble us that a time will come when we shall cease to be?"

William Hazlitt.