3 DS - aged 6, 5 and 3. Gorgeous, of course, BUT - they just don't seem to listen to me when i'm asking them to do things unless and until I start to turn up the temperature. I try softly softly, firm but fair, patient etc and then just lose it and start screeching (which I hate myself for) but then it's like something clicks with them and they think 'right ho, we'd better do what mummy says now as she's shouting'. Feel like its getting into a negative pattern. How can i get them to listen without them ignoring me until I shout??