Pim, who recently left her job in a go-go bar, has a typical story.
"I grew up in the countryside in Phetchabun, northern Thailand. My parents were farmers and I helped them in the fields. We were poor but we always had enough to get by.
When I was about 15, my family fell apart. My father always drank a lot, but it became worse and worse, and he started becoming violent. So my mother, sister and I moved out.
I wanted to study to become a nurse, but when my parents split up I had to leave school and find work as a day labourer, harvesting crops for local farmers. I didn't like it much, and it only paid 100 baht ($3) a day.
At about that time a good friend moved to Bangkok, and when she came back to visit she told me she was earning a lot of money there as a waitress.
There was gossip in the village that she was doing something other than waitressing, as she was sending 10,000 baht ($300) home a month, but she always denied it.
She asked me to come with her, but at the time I was still 16 and too scared. A few years later, though - when I had given birth to my daughter, and my husband and I had separated - I changed my mind.
I left the baby in Phetchabun with my mother, and told her I needed to earn some money in Bangkok. But I didn't tell her what I was doing - I still haven't. She'd be so ashamed.
'Can I do this?'
When my friend took me to a bar in Nana Plaza for the first time, I was really shocked. I'd never been to a place like that before, and at the beginning I didn't even know what the dancers were doing.
When I finally realised, I couldn't take it and I walked out of the bar. I kept thinking 'Can I really do this?'
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