* The five daily recollections as part of your early morning practice (Upajjhatthana Sutta).
I like TNH's version, which I try to absorb before I meditate first thing in the day.
Really visualize each recollection happening to your body and your life.
1. I am of the nature to grow old. There is no way to escape growing old.
2. I am of the nature to have ill health. There is no way to escape ill health.
3. I am of the nature to die. There is no way to escape death.
4. All that is dear to me and everyone I love are of the nature to change. There is no way to escape being separated from them.
5. My actions are my only true belongings. I cannot escape the consequences of my actions. My actions are the ground upon which I stand.
After all, what is left after your death among the living but the ripples of your actions?
* Continued study of emptiness from many different angles. It's hard to integrate it into our lives sometimes, so different metaphors, language, stories can spur insight.
I'm currently reading "Seeing, Knowing, Being" by John Greer. It draws on many different mystical traditions to explain non-duality and other ideas in a broad way. I've found it very helpful.
My view is that like any concept, we saw this strange "thing going on" and tried to make sense of it.
We decided to call this birth, that life, and that death, cutting one off from the other.
Somewhere on the way, we started accruing emotions and ideas on top of this idea "death".
We're afraid of a monster of our own making.
But it's hard to ignore it when nearly everyone you know believes in it and has taught you the same fear.
* A regular meditation practice to fortify mindfulness. That way, fear of death doesn't get such a strong foothold and make you sick with worry or sadness.
You'll need all the mindfulness you can get to approach such a strongly engrained thing as fear of death and all the socialized baggage that comes with it.
A strong practice will also give you the bravery not to listen to those fears but investigate for yourself.
We have to heal our painful concepts about death.
We're all in the same boat
Hope that helps.