Me at my biggest ever -- I was only about 56~57kgs which is only a few kilogram more than what I am now but my body fat percentage was in the obese category (not to mention I actually had a chest back then too... woozers!)

[side note: I was sporting a cast on my hand here after a brutal fight I had with a bouncer at the club I bartended to put myself through uni.  It's also what triggered me taking up boxng.]

I always did running and sports in high school but when I got mono in my last year of high school, I hated every and any sport for a couple of years.  In university I was all about bodybuilding though.  Two of my exs are semi-pro bodybuilders so that definitely got me more into it.  
When I moved to Korea I was already packing muscle but then it just grew from there because I didn't really know what else to do with my free time here so I was always at the gym. 

 Then I restarted my boxing and turned professional.  

Note these two pictures were taken in pre-fight training mode, meaning that though I looked really lean, I wasn't what I would consider healthy.  Nothing is healthy about pushing yourself to extreme limits with eating and dieting.  I was 47kgs in the pic on the left and 49kgs in the other.  Note also that a smaller weight doesn't mean a lower body fat percentage either!

 And then there is this picture, taken right after I had stopped female bodybuilding and had already been a couple of months into my boxing.  I was still sporting much of my muscle bulk but had really leaned out.  

I want to find this balance again but it's hard.  I do my own weight training but with all the training I do with clients it's hard to avoid overtraining on cardio.