I was the youngest child and got a lot more freedom than my brother and sister. I used to wander, doing my own thing under the radar, but I didn't get in bad, bad trouble.
I have such an extreme attitude about work, where I can just completely be derelict of my responsibilities and then when I am not derelict, I am completely indulged in it. I swing pretty wildly from the two extremes.
I don't know what any individual should do about crossing her own borders. I only know that I live a happier, more adventurous life, by crossing borders.