I know that this is hard for you, as it is for me. To see the people you love, and be a part of their lives, for only a moment and then to walk away. It feels like you are a visitor on their journey, a holidaymaker as someone else. The familiarity, and ease, is overwhelming.
I know that this is hard for you, as it is for me. Wondering when you will see them next; when you will be here again. Forcing yourself to take that flight back to normality; to school and work; to routine and a culture you might have immersed yourself in, but to which you will never belong.
I know that this is hard for you, as it is for me. But I can promise you that it is worth it. The skills you are learning, the life that you are leading, will present you with opportunities that I dream of for you. Your exposure to other cultures will, hopefully, develop in you the ability to be tolerant, to adapt and to accept that not everyone is the same. Difference is not something to be afraid of.
I know that this is hard for you, as it is for me. To walk away from them. But be assured that it is Ok to make your own path. Be independent. Be extraordinary. Be different.