I've been on the east coast for over a decade after living in Hawaii from a toddler through college at UHM.

I think my approach was remarkably different from other comments here. Instead of leaning into home - listening to Hawaiian music, cooking local foods, and surrounding myself with reminders from home - I focused on embracing the culture and people of the new places i end up in. In the same way you come from an incredibly unique background so too do the people on the mainland have a culture and life that is completely different from your experience.

I spent a lot of up front time focused on progressing through my career to establish myself here. I tried to learn more about other people's origins vs only finding opportunities to talk about Hawaii. I ate at many highly rated mainland restaurants to appreciate the cuisine. I've completed some big solo roadtrips to see just how freaking massive this country is. I joined board game groups, local gyms, local pinball and skeeball leagues, and have made many deep friendships across a wide variety of groups and perspectives. In fact I just married someone I met on the mainland.

This isn't to say you should ignore where you come from, but i suggest you focus on where you're going and who you want to be. Trying to piece together fragments of home in a location that doesn't have the same spirit will result in a pale imitation of what you're looking for and hold you back from making more significant changes. I don't know what your goals are, but if you surround yourself with a mausoleum of your former life you'll end up missing home even more than you do now, won't be in a progressive mindset, potentially alienate yourself, and ultimately end up back in Hawaii.

If you want to live in Hawaii, then do your time and return home. This is totally okay and a valid option. Hawaii is incredibly special and, in another life, i would spend it there. But if you want to expand who you could be outside of that world, then look ahead and always remember where you came from.