taking page out of my book 

When someone tries to do the same things you do.

He is wearing the same hat I do. He's taking page out of my book

taking page out of my book by Boston Travis October 1, 2007

taking a page out of my book  

Attempting to copy or steal someone's idea or mannerism.

He's wearing a red hat like I do, he's taking a page out of my book .

taking a page out of my book by Boston Travis September 14, 2007