The antonym for "wast on one side" can be "balance." Balance means an even distribution of weight, importance, or influence. When something is balanced, it is properly aligned, stable, and makes sense. It also implies a sense of justice and fairness. The opposite of imbalance, this word represents a sense of harmony and symmetry. When used in the context of wast on one side, balance is used in the sense of the opposite of wasted, meaning well-utilized or properly allocated. To have a balanced life is to be harmonious, stable, and structured - a fruitful effect that can be achieved by avoiding wastefulness.