Set in one's ways?

[bartholomew]

In your current job you may have become set in your own ways or stopped being proactive.

could you explain what to be set in one's ways mean?

[Grunty]

Someone who has been doing the same job for years may be so accustomed to the routine that he carries out tasks without thinking about them, and does not think of changing to better methods.

[Andy008]

To be so comfortable with one way of doing things that the concept of doing things another way is condisered unacceptable.