Many new hires are so anxious to make friends and a good impression that they often make mistakes that will leave them with neither.

To ensure this isn’t you, check out the list below of 10 things you should be cautious of when you’re the new kid on the block:

1. Don’t tell your new manager how your old manager did things.

Unless you were hired to be a change agent in your new position, your new company has little interest in how your old company handled things. Your new company has likely been successfully doing things the same way for a while, and there isn’t much that will scorch a manager’s ears like a new hire trying to change policies and procedures that have worked well.