But How?

I don't know how to face and/or overcome my fears. I am so afraid of growing old and dying. My only two fears. It's not some concrete fear that I can just step out in front of and face. I don't want to grow old. I'll lose more people. My physical strength. People tend to loose respect in this day and age. And then I'll be even closer to my biggest fear. Death. I know people always tell me that I shouldn't fear it, but I do. I've grown up in a household that never really pushed or brought up religion much at all and a time where science overrules. So my faith in God(dess)/s is few and far if even there at all. And I feel the same about reincarnation. I'm so afraid it will be like when you are asleep but not having a dream. Everything is just black. The only reason you know that you were asleep is because you wake up. You don't think. In death you wouldn't feel. Nothing. And I'm afraid that death will be just like that. But it will be like that forever. All eternity. Infinity. When you die you will ALWAYS be dead and it will be just like that. I get just slightly anxious thinking about it too hard. That's what I'm afraid of. That's what I want but don't know how to overcome.