I moved over when I was on the verge of turning 40 years old, so a bit older than some & I didn't have an already established group of extended family & friends to start out with, like what Chary did. I moved over to get married to my English DH, arriving at the end of March & we got married in mid-August 2004. I remember when I initially arrived - first there was all the excitement of planning our wedding, followed by which we applied for & obtained my spousal visa, then immediately went on our honeymoon, then it was Thanksgiving (I went back to the US that year for it) & Christmas/New Year's, and then we bought a house. So all sorts of exciting stuff right off the bat, which took up most of my time & energy. I was also kind of worn out when I moved over here, having gone through some tough things in the two years leading up to when I moved over - putting both my mom & my grandma into full-time nursing home care & related trauma/depression over things to do with that, as well as some other issues. I was emotionally & mentally exhausted, and I remember sleeping a lot in the beginning - lol!
Anyway, once we'd got through the wedding, the spousal visa, the honeymoon, the holidays & buying the house, and it was time to settle down to real life & the 'vacation' part was over - wham, reality hit. Of course, I was lonely & felt self conscious and a lack of confidence about so many things - feeling like I had to learn how to do everything all over again at the age of 40 - shopping, driving, how to speak, you name it! I had always been one in the US who knew how to get stuff done, independent, took care of other people, drove everywhere, etc - and here I felt like I didn't know how to do anything and wondered if I ever would.
Not always easy, but it was a good learning experience in that I learned how to keep my own company a lot better - which was something I needed for myself, as I had always tended to surround myself with others (after my childhood), rarely spending time by myself. Now I had plenty of time to myself. And also, learning how to let someone else (DH) take care of me - which was a big change too.
I didn't rush finding a job either. As I recall, I did a handful of temp jobs (not many) and then in July 2005, I got my first job at a pension administration company. Worked there for about 6 months (until the end of 2005/early 2006) & hated it. Believe me, there were many, many tears of frustration shed over when/if I'd ever find work here that I liked & that suited me. What I did in the US last (which I'd enjoyed), well if it's done here at all, it's probably down in London somewhere, and I don't live in London. After I quit the pension company, I took another 'career break'

, for about 6 months until I found a job at the same place that I still work now - 5 years later. It's okay, but it's not great. But a job is a job is a job. I've got some good mates there, however, so that part is good.
This website (UKY) was great for me. I started organising some UKY meetups - we had a mixed response at first, only a few people came out. Then we had a HUGE meetup back in August 2006, where maybe 30 or so people came -- that's where a lot of us (here in Yorkshire) first met IRL & a lot of us kept in touch and became RL friends from there. My best friends here are all people I met through UKY, quite a few other British-American couples like ourselves plus a few others that aren't couples or aren't American at all. Then I stopped doing the formal/organised meetups because really we were getting to know so many people so fast, that I couldn't keep track of everyone any longer! And we had something going on what seemed like every single weekend that we didn't have any downtime just for us (DH and me). Time for someone else to take hold of that organising meetups baton, I reckon.

It was about 3 years in before I really felt settled & like I had most of my life back, but I put off learning how to drive for 5 years! TBH, I never saw moving back to the US as a viable option though - so the sooner I stopped comparing & pining for a life back there, it was really better for me. I mean I didn't own any property in the US, I'd quit my job, sold my car, adopted out my cat to my BF back in the US, and my family ties weren't as close as DH's are to his family. (Also, I really hope I'm done with moving!) Oh & I had never (by any stretch of the imagination) ever really been 'well off' in the US, so there isn't any compelling reason at all to ever move back there. I had already uprooted my life once in moving from Kansas to Florida, and actually it took me longer to settle in there & make friends than it did for me to do it here. Both took time & patience - maybe because I had done it before, I had a realistic expectation of just how long that could take? DH was always a good shoulder to cry on & a sensible sounding board - whenever I'd take up with 'oh why is it like this here?! oh why are British/English people like thus & so?!'...he was always the first one to gently challenge my assumptions/conclusions & help me to see that you just can't generalise like that - so many things that happen are down to specific people & specific experiences as opposed to painting something with a broad biased cultural stroke.
Now I've been here for 7 years, and I feel less & less of an expat anymore, and more just like I live here just like anyone else. I don't think that much about being an expat anymore, if that makes any sense? I think this is a great thing. And I'm grateful for all my local girlies, like MLG, Andee, HME, persephone, and others, plus all the fabulous UKY peeps I've met all over the country when we've been on our travels here & there.
And I am so glad I moved here!! My life in the US - well I can't imagine it would ever have been as fabulous as my life is here. A lot of that is down to finding the right guy - DH, who I never thought I'd find & he showed up late too! We are peas in a pod.
