I'm in my first 'proper' job since leaving university, I've been there for just over a year. It's in marketing. I've been surprised at how much of a staff turnover there is, most people tend to stay 1-3 years and then leave. In the last month, in the team of 6 I work most closely with day-to-day, 4 have left or are leaving. I've had two line managers leave this year, and am on my third now. I really struggle with change, and feel really unsettled by it. It doesn't feel the same anymore, and I find myself wanting to leave too.
How do you know when it's time to leave, and how do you know what to look for in a new job? I'd stay in a similar role, but in a new company.