Parents who consistently laud their children for every attempt to accomplish something, whether successful or not, actually erode the youngsters' sense of self-esteem  Children require commendation for their achievements, but if uniformly praised for both what they have accomplished and what they have merely attempted, they will eventually discount all words of commendation
In effect, such children never hear any praise at all
Children's self-esteem will suffer if their parents uniformly praise their attempts to accomplish things regardless of their success or failure.