You won't know when you get used to it, or become one with them. It just happens. Then one day you wake up, or are eating a meal, in school, at work...whatever. Your hand will drift up or something and you'll realize 'I have dreads, when did that happen? When was the last time I thought about what's going on on my head?' Then you kind of obsess about them in other ways. What kind of beads, wraps, decorations to put in them. New ways to tie them up, braid them, create new styles with them. That's (for me) about the time that people really start to notice and comment on your beautiful locks.