This is the hard bit, you have booked a one way plane ticket, with the intention of not returning for months or years. But the excitement wears off for a brief moment when it comes to saying goodbye to friends, family and work colleagues and reality kicks in that you are not going to see them until you return.
It is easier saying goodbye if you have support from everyone, rather than people being negative about your adventure. Even if you have some individuals who don't think you are making the right decision, it is most likely that they are worried about you exploring the big wide world (probably because they are not well travelled themselves) and that simply that they are going to miss you.
It is a good idea to keep your loved ones in the loop when you are planning on leaving and the rough plans you have. Keep them involved, rather than keeping your journey a secret, as they will need a bit of time to adapt that you are leaving and that you are not going to be around.