A colleague who left recently told me how, despite being happy because he left X, he is under a lot of pressure in the new company, considering that his skills have been significantly eroded here. Now he has to put in double efforts at his new job in order to overcome the lack of necessary skills.
I believe that most of those who have spent a lot of time here have the same problem when they get a new opportunity? I am trying to upgrade my skillset as much as possible before I leave.