I teach this in my classroom! Or in age-appropriate language, "You have a lot of good ideas! We need to let others have a turn too". Some of the most frustrating traits in toddlers/preschoolers are what will make them successful adults.
Kiss your children. It can really change your outlook on parenting when you realize that what your children learn from you will not only affect them, but will also affect your future grandchildren. Your children learn to be good (or bad) mothers and fathers straight from you.