I'm not sure what you mean by "how did you come by it"? I think I've always believed in reincarnation, even before I knew a word for it or had read anything on the subject. Its more that I always "knew" I had lived before, even though I was raised in a family that believed quite the opposite.
I didn't actually do much research into reincarnation or meditation until my daughters birth, when I was left with such a strong feeling of having done this before, and my impressions of her spirit. My next birth was nothing like this. That's not to say its not important to me, but it was just the physical birth. I did have some impressions of him, but not nearly to the same level.
I don't think we necessarily "choose" these moments. Sometimes they just come to us. For me it may have been a once in a lifetime opportunity.
I didn't actually do much research into reincarnation or meditation until my daughters birth, when I was left with such a strong feeling of having done this before, and my impressions of her spirit. My next birth was nothing like this. That's not to say its not important to me, but it was just the physical birth. I did have some impressions of him, but not nearly to the same level.
I don't think we necessarily "choose" these moments. Sometimes they just come to us. For me it may have been a once in a lifetime opportunity.