This is the 50th most frequent Hungarian word.
saját
"Own" (indicating possession or belonging).
Here, 'saját' indicates individuality or personal nature of the path related to each person's choice or destiny.
Mindenki a saját útját járja.
Everyone walks their own path.
In this context, 'saját' specifies that the plate to be brought is individually owned or specific to the person being addressed.
Kérlek, hozd el a saját tányérodat a vacsorára.
Please bring your own plate for dinner.
In this sentence, 'saját' is used as an intensifier to emphasize ownership or personal possession of the book by the speaker.