The word order

Hello everyone.
My original sentence is "It has become a habit for me."
However, I would like to add "which can be dangerous" referring to "a habit".
How can I locate it?

1-) [For me], it has become [a habit which can be dangerous].
or
2-) It has become [a habit] [for me] [which can be dangerous].

Which one is correct grammatically and natural English?
Thank you very much in advance.