There are several synonyms for the phrase "balance in hand". One such synonym is equilibrium, which refers to a state of balance or stability. Another synonym could be poise, which suggests a readiness to react or adapt to changing circumstances. Stability is another synonym that describes a state of balance or being firmly rooted. Composure is yet another synonym that implies a state of calm or collectedness. Finally, symmetry is a synonym that suggests a sense of balance or proportionality. All these synonyms describe a state of balance that is essential for success in a variety of endeavors, from sports to business to personal relationships.