I lived on Oahu for two years. Sometimes I miss it especially the food and weather. It's beautiful and paradise and all but honestly it can be a hard place to live. If I hit the lotto I'd go back but I'd only live there a few months out of the year.
I've never seen so many homeless people in my life not to mention crazy people. I call it island fever. It's a small island and you go stir crazy because you can only go in circles.
The first year I was there I was a little stressed because I wasn't working I was living on savings and it's an expensive place to live so I was concerned about my money running out. It took me a while to get over sticker shock at how expensive things are but I tried to live as cheaply as I could.
After 9 months I had a job and a little more money so I was able to relax a bit and start to enjoy it but it took a while to get used to living there. I lived five minutes from the beach and every day I would go there and roller blade or just lay on a blanket and read and that was nice.