I have dealt with these types of future anxieties all my life. I started mindfulness meditation, and through this practice, have started to realize that the only thing that is REAL is the present. When I start having panicky thoughts about the future, I try to say to myself "Wait. What is happening right now?" If I can focus on right now, right this moment, then I can calm down a bit. I can see that right now is real -- all the other thoughts are just thoughts. It takes practice, doing this over and over, but it has really helped me. Another way to do it is: when you start to have panicky thoughts about the future, try to bring your attention to your body. Say "What am I feeling in my body right now?" Bring the attention back to you physical body. This way you bring your attention back to now. And you will notice that it passes. The panic passes. I hope this helps.