Include more fiber in your diet. Fresh fruits, leafy vegetables, and whole-grain breads and cereals are good sources of fiber.
Drink plenty of fluids (except alcohol). Eight glasses of water a day is ideal.
Avoid laxatives, except bulk-forming laxatives such as Fiberall, Metamucil, etc. Other types of laxatives can lead to diarrhea, which can worsen hemorrhoids.
When you feel the need to have a bowel movement, don't wait too long to use the bathroom.