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If you're nervous about starting conversations with new people, Rosie says the best thing to do is just "turn up, leave your room at the hostel and just say hello to someone".
Another keen solo traveller, Aiz Hussain, believes it's all down to being open-minded and asking the right questions.
Even little questions like asking hospitality staff 'where would you recommend to go next?
"And you just find yourself going on these crazy adventures."