I had one of these. She didn't sleep through until 14 months, she didn't go to bed before midnight until easily 18 months. When she did fall asleep anywhere (eg, on your lap) you couldn't move her without having to restart the settling process from scratch, even if you took 2 hours to get her down. Now, at 2 3/4 years old she goes to bed at 8-9pm and sleeps to 7:30am. Only has a day nap if she's sick or we take her for a 30 minute walk in the pram or a long drive mid-late afternoon. She'll only sleep well at home so we're really loathe to travel anywhere that involves an overnight stay unless we really have to. She's such a bad sleeper that if she was my first child there's no way I could have gone back to work before she was 18 months - I just wasn't getting good sleep before then.

I have no idea if you even *can* do anything to get a non-sleeper to sleep, we go to such lengths to get DD#2 to sleep but the other two just ... slept. Without trying anything or doing anything out of the ordinary.