BEC高级真题第二辑test3听力part2第一段独白是什么意思,看不懂?

BEC高级真题第二辑test3听力part2第一段独白是什么意思,看不懂?
听没听懂,看了半天发现没什么生词,但搞不懂到底什么意思,强人帮帮忙,
听力原文：
I'd been feeling for some time that a move was overdue,and I suppose it was just the fact that I thought I'd miss the friendliness of the place that held me back.But in the end I realised that I could spend my life there and not move up the ladder-you could see how the roles with responsibility were filled by people who weren't themselves about to move on.I'm glad overall-I can see my role will continue to develop here,and I've had no second thoughts-the the only drawback is...后面看的懂了.