Good discipline begins in the cradle, imo. A baby should not immediately get attention the second it craves it. Obviously if it is in pain, or real distress, then of course immediate attention is called for. Children need the right sort of attention to educate and nurture them. I set aside daily baby time when I would devote my whole attention to them. As they grew older my husband, who was useless, and then some, with small infants, would teach them to play board games of all kinds, and read to them. I remember our eldest thoroughly enjoying the unabridged version of 'Wind in the Willows' at 18 months old. On the occasions my husband gave her breakfast, he would cut up her toast in the shape of a jigsaw, buttered on both sides, to make it harder, and she had to put the jigsaw together before eating it, this was before she was two!
I am a great believer in children adhering to fixed bedtimes, whenever possible. Parents need a kid free time together to regain what passes for sanity. Children shouldn't expect to be the centre of attention 24/7, spoiling a child only causes problems further down the line.
When our children were small they had carefully chosen presents for Christmas and birthdays, but we certainly didn't go mad with a room full of presents, even if we could have afforded it, which some spoilt little brats seem to expect these days!
Some of their presents are still around and delighting the grandchildren!
Too many parents coddle their kids in an outrageous fashion these days, which does them no favours at all. In an age appropriate way children need to take responsibility for their actions, as people of my age had to do as children. A few cuts and scrapes are normal in childhood.
Obviously in this computer age there are dangers which weren't around heretofore. Parents should know what their kids are getting up to on their computers/phones and check them regularly for any inappropriate activity.
Children require sensible parenting and know that the parents are in ultimate charge. However, a good parent should always apologise to their offspring when they screw up as inevitably happens.