I get it, I really do... but I'm very wary of 'you don't' because it a.) is probably not the answer the OP is looking for and b.) it can lead to a lot of different problems... like people asking 'how to tell a bestie I'm LGBT?' being answered with 'you don't because it's bad'....
If you really want to avoid conflict, for me it's good to point out that there's a possibility you'll never be able to do so... but give the OP some guidance as well on how to at least try...