Sorry, know nothing about Dao. However, a fear of death does not prevent you from fully living. All that nature wants from you is to reproduce and your offspring to survive to reproduce. That's it. Of course, not being afraid of death can lead to great accomplishment - but also great tragedy. There is an obvious benefit to fear of death in prolonging our lives. Too great a fear, however, could prevent us from taking necessary risks. But, fear of death overall is a good thing - otherwise we wouldn't have it. It would have evolved out of us.
You know the Dao man, you breathe from it every second of your life, and you eat from it for survival. Like water, the Dao gives everything but does not asks for anything in return, such is the nature of the Dao. You should read some Lao-Tzu, is good stuff.
Death is somewhat like your shadow. Our minds have a crazy desire: we want only life and not death. We don’t care for the existential truth of life and death, we cling to our insane desire. This desire is common among living creatures, but the difference is that we are aware of this. We know we are going to die, we were born, therefore we will die, it is simple.
For me is a simple truth, if you are afraid of dying, you are not happy right now, and by right now, I mean now. You are not fully living, you are afraid because you have unfinished business, not realizing how insignificant that unfinished business is.
Unfinished business gives you attachments that are hard to let go, is not hard to let go if you think about it, everything we know is temporary.
Our life is just a glimpse of eternity, our life is nothing but an open and closing of your eyes, you closed your eyes already; but you are afraid of opening them again. This is useless, we need to be able to open and close our eyes as much as we want to.
Your search for eternity is nothing but trying to keep your eyes closed. The universal panacea of alchemists is nothing but the search for the glue to keep these eyes closed a little longer.