Hi Josh,
When your lucid you are thinking about your dream characters in the past being hostile towards you and are expecting this, because you are expecting this your dream characters are behaving in this way. When you see a Dream character next time, don't think about hostility or anything like that, just smile at them and think " hey here's my friend" or "wow he looks really nice" you will notice a change in your DC's. You could always just fly off if your still weary of them...remember it's your dream, you control what happens! Expect everyone you meet to be there to help you, don't think anything else. You can close your eyes and imagine them gone if you want to and imagine yourself in a new surrounding forget any feelings of hostility towards you because it's hindering you, go into your dream 100% knowing that you'll be ok and they're there to help you. Happy sleeps my friend