If your string of hearts plant is overwatered, don't despair! In most cases, you can save your plant with some simple steps. To start, water your string of hearts plant less frequently. Allow the soil to dry out completely between waterings. You may need to water as little as once a week or even less often. Next, increase the air circulation around your plant. Place it in a well-ventilated room or near an open window. Consider using a fan to circulate the air around your plant. Finally, give your plant some extra love and attention. Check the soil regularly to make sure it's not too wet or dry. Prune away any dead or dying leaves. With a little time and care, your string of hearts plant will soon be healthy and thriving!