New diagnosis of ascending aortic aneurysm and I’m terrified

I received the diagnosis of a 4.1 CM ascending aortic aneurysm as an incidental finding after an angiogram was ordered to make sure I had no blockages due to an unexpected spike and blood pressure at work. I normally have low blood pressure so I was surprised when it was 189/111 and they took me to the hospital. that seem to come from acute stress at work, but I had a complete cardiac workout after finding a very low amount of troponin in my bloodstream 0.03. Anyway, the aneurysm was a complete shock and now I’m terrified that it’s going to burst at any time despite my cardiologist rather nonchalant approach. I asked if there’s anything I should be doing or not doing and she said don’t lift anything over 40 pounds . But no other instructions other than they’ll keep an eye on things. How do you get past feeling like your life is almost over. I’m 67 years old and in good health otherwise. I eat healthy, not overweight and thought based on my family longevity that I would live into my late 80s early 90s. Now I’m afraid I won’t make it till the end of the year which is probably ridiculous but this aneurysm has me totally freaked out. How do you all cope? And how do you get the fear so you can just enjoy life?