Below are recommendations for reducing parental pressure and raising happier kids. For more tips, read articles about raising kids and keeping them happy. Also read Jennifer Brehenny's book about avoiding problems experienced by over achieving kids.
Delight - Lighten up when your child enters the room to show that their presence delights.
Chores - insist that your child complete chores because it makes them feel that they matter at home.
Family - organize low-stress family activities to promote healthier balances between work and play.
Grades - don't emphasize top grades in every subject to avoid pressuring your child.
Outdoors - promote outdoor activities like camping, hiking, etc.