Through lots of reading I've found that there are many different ways to parent. What type of parent are you? Baby wearing? CIO? Pick and Choose your battles? Do you give in? Let them pitch a fit? Time out? Spanking? Anything - share with us :-)
With my 3 month old of course I give her all her needs. I don't let her CIO. I get up to feed her when she wants it.
With my 3 year old I let her pitch fits. I don't give in because we're at the "control" stage. I have to let her realize that I'm the adult. She goes to time out in her room until she's willing to settle down and listen.
With my 7 year old I give her time outs as well. As she's gotten older we really don't have much trouble out of her , besides the occasional talking back when she's in a bad mood. She does chores to earn stuff and I really like her age right now.