OP, do you fear being dead, or do you fear the process of dying? Fear of being dead essentially boils down to fear of the unknown. The latter, however, is more a fear of pain, loss of control, and a reminder of all the loose ends we never had a chance to tie up in this life. The treatment for each of these is different. If you fear the unknown and unfamiliar, there are techniques for overcoming this, and becoming at peace with uncertainty. I'm not a psychologist or clergyman, but I would imagine exposure therapy is probably what this involves. On the other hand, if it's decline, decay, and loss that gives you the heebie-jeebies, then what you need to get comfortable with is letting go, finding closure, and finishing what you start and not leaving unfinished business. The physical pain of dying, in my experience working professionally with the elderly, is best ameliorated by a thick cocoon of warm and meaningful interpersonal relationships right up to the end.
A great many thinkers and seekers throughout human history have come to the conclusion that being is a cyclical thing. The old breaks down and dissipates, allowing the new to form. We're reminded of this every spring when new life springs forth from the earth, and at the heart of most springtime festivals, anthropologically, is the hope and faith that our own lives follow this same cyclical pattern of rebirth and renewal. Personally, I find it quite sensible that what follows death, subjectively, is some form of rebirth. Do with this what you will.
For the record, I am a man of faith, albeit in a minimalist sense -- I believe that I am living the life I am right now as part of some greater plan (and so are you), though I cannot fathom what that plan might be, or who the Great Planner is. I've come to realize that my existential angst is in many ways the exact opposite of a fear of dying. Despite its many joys and ample beauty, I find [at least this form of] sentient existence so painful that the hope that it's part of some greater cosmic plan is the only thing that makes it bearable for me. If you could prove to me beyond a shadow of a doubt that I'm a random one-off accident in an indifferent universe, I'd gladly die tomorrow. Your mileage may vary; the various secular Humanist movements have all sorts of beautifully written literature arguing that this life is more than worthwhile on its own merits, and needs no connection to anything external to be liveable. Personally I was never sold on this idea in any formulation, and have noticed that those whose hearts are taken by it tend to be people whose lives are markedly less hard than most of humanity.