There is very little you need to pack - just a few essentials: yourself, an inquiring mind and an open heart.
Much like any journey you will encounter new experiences, you may have a few delays and lose some baggage. You will almost certainly pick up some new things along the way. Your perspective may be altered, perhaps your beliefs about yourself transformed. You may decide you don't ever want to return home, but by then you may have realised that home was in you all along.
So if you can remember to: play with the innocence of a child, inquire and be open to what comes along, leave judgement behind - the only thing you need to do is pay attention, trust the process and breathe.