Hi guys. I think I can relate.
The very first time I suffered from a panic attack, I had to be hospitalized. I had no idea what was going on. I was 16. High school was particularly stressful at the time.
My aunt had cancer twice. She's ok now, but I remember I cried a lot when it happened. I didn't want to lose my aunt, my little cousin is just a kid and I have a terrible fear of illnesses.
I've been trying meditation for a few years and it has helped me. However, I did have issues with focusing and relaxing at first. I went online and asked people for advice on how to "empty" my mind. Someone told me to focus on something positive (or maybe just a stain on the wall) rather than forcing myself not to focus on the negative. In my case, this little piece of advice has worked marvels.