Try to reserve judgement on things for as long as possible. You'll be shocked by some things, and you'll find some of your new colleagues incredibly frustrating

Try to reserve judgement on things for as long as possible. You'll be shocked by some things, and you'll find some of your new colleagues incredibly frustrating, but try to hold off on forming harsh judgements until you really understand the context. Have faith in yourself. If you were a go-to person in the past (the kind that has people visiting you for help) then you'll be a go-to person again, just give it time, you WILL get there. Sometimes you'll be stressed about whether you're getting there quick enough, but just relax and have faith that it will happen. That said, remember that being in your last place for 15 years has given you an unreasonable amount of insight there, but you don't know it all at the new place, so listen. You might find this job is a rebound job. It might take you a few attempts before you find somewhere you want to stay for many years. It might be them, and it might be you, bit don't take it too hard if you find the new place isn't right for you and after giving it a good go you decide to move on again.