We have two kids, both grown now.
Our oldest was the most amazing baby. He was ALWAYS in a good mood and soooo laid back. He loved everyone, napped like a dream, went to bed happily and ate everything I put in front of him. I used to look at other parents struggling with their little ones and feel like the GREATEST MOM IN THE WORLD.
Well, two years later along came his sister. It started at birth. My OB was a country boy and at her delivery he put it like this: "This 'un's a squalling before it's even left the hatch." (Sorry if that was TMI) She literally came into the world pitching a tantrum and they continued pretty much non-stop for four years. The kid slept about 12 minutes a day and refused to eat anything but Cheerios and mac-n-cheese. She didn't just throw tantrums-she threw tantrums with amazing staying power. The girl could go for hours. She was also a bit of a bully and was pushing around kids twice her age by the time she was three. Her first word was "mine", no, make that "MINE!!!!!!!!!!!!!!!!!!" Before she was two I owned every child rearing self-help book out there and felt like the WORST MOTHER IN THE WORLD.
Now fast forward to the school years. DS remained happy and laid back. He was happy with the Cs on his report card and laid back about his many trips to the principal's office for excessive socializing in class. (After all, he's the kid who loves everyone, remember?) He still napped like a dream, particularly during Biology. I'd go to parent-teacher conferences and leave feeling like the WORST MOTHER IN THE WORLD.
DD, on the other hand, hit her stride once she began school. All of that passion and stubborness suddenly transformed into ambition and determination. The kid never made a B and never once got in any kind of trouble. All of her teachers thought I was the BEST MOTHER IN THE WORLD.
Now they're both grown and fabulous. DS is a high school teacher, a career where his patience, sense of humor, excellent social skills and abundant good nature stand him in good stead. DD is in medical school where her drive and ability to study for 18 hours a day (that same stick-to-it quality that led to those 4 hour tantrums!) are really paying off. These days I'm a GOOD ENOUGH MOTHER and vastly prefer that to the roller coaster, thank you.