I don't know who you will be, but this is for you:
Don't say goodbye; it will make your departure final.
Don't pack for the possibilities; with him there are no such things.
This is how to nod and smile when he starts to ramble.
This is how to remember yourself when you leave the normal world in every sense.
This is how to laugh in the face of danger.
This is how to recognize him behind a new face.
Remember to breathe when you forget everything else.
Remember you are not dreaming.
Remember you are human, and he is not.
Remember to eat, sleep, and brush your teeth.
Don't have any expectations; his world is beyond the imagination of the most even the most unrestrained mind.
Don't expect any other world to bear any resemblance to our own; you will lose yourself in a sea of nonexistent patterns and connections.
Don't forget that everyone deserves the right to live, no matter what.
This is how to keep track of the passage of time while you live inside a time machine.
This is how to discover who you really are while you are millions of light years away from what you are built for.
This is how to run faster than you have ever run before.
This is how to hold your end of a conversation while discussing the very fabric of space and time with a man who has two hearts.
Remember that you are always home with him.
Remember that he is a nine hundred year old alien in a body of a young man.
Never forget that you have put your life in the hands of a mad man with a box.
Remember what it felt like to be bored.
Remember the people you have loved and remember those who have loved you.
Remember that the Doctor and his beautifully awkward overconfidence have saved your world countless times.
This is how to leave the TARDIS and the Doctor after realizing this is where you are truly happy and home.
Remember that the Doctor always returns.
Love,
Rose