Prepare to live. As tempting as it may be, don’t spend the precious minutes between missile alert and missile impact texting family, sending tearful goodbyes on Snapchat, or attempting to reconcile old grudges. Don’t do it. First, you have to understand that the odds are overwhelming that you’ll survive an initial blast. Nuclear weapons are devastating, but it’s a Hollywood myth that any individual strike will vaporize an entire American city, much less the suburbs and countryside. You can go to sites like nuclearsecrecy.com to see the blast radius of direct nuclear strikes at various yields.
The bottom line, even if a nuclear weapon as big as the largest North Korea has ever tested were to impact squarely on Manhattan, the vast majority of New Yorkers would survive the initial blast. A strike would devastate central Honolulu but leave many suburbs intact. If the missile misses a city center even by a small amount, the number of initial casualties plunges dramatically.
Let's suppose you're minding your business in a lovely suburb of Honolulu. Honolulu gets ALL BLOWED UP. But, hey, you don't die in the initial fireball. OK let's say you don't die of radiation poisoning within the next week or two. You've survived! That cancer will be along in a few years, but, hey, no worries for now.
Best case scenario, you live in current day Puerto Rico for a bit. No electricity, no water, but, hey, you're alive. Also, nobody is going to get near your radiation zone. No rescues, no supplies, no nothing. Enjoy your last couple of weeks on Earth, I guess. I suppose you can forage for fruit, for a bit, and as a good conservative you own guns so you can shoot all the "looters" who are trying to take "your" fruit, but...
No, I do not want to survive the initial blast.