Sure it's been done before, but am obviously too dumb to find the topic...

I'm applying for post-docs (biological sciences) at the moment and all the forms have these 'Personal Statement' sections. Any hints or advice on the best way to fill these in? What do these people want me to say now? Isn't it enough that I've filled in reams and reams of previous form?? (Links to past topics welcome)

Thanks

Say why you want to work in this field, how this PhD will help you get the career you want. How you cam to decide you like this topic, explain you're previous experience in it. etc

I assume it is very relevant to your PhD. Even if not, they would want to know what experience you can bring to this postdoc research, from your previous one. People also love reading examples in personal statements. So it would be good if you can give one or two examples showing how you handled pressure or how you managed to overcome certain problem during your PhD research.