Inositol helps balance chemicals in your brain, like serotonin(AKA the happy hormone), which makes you feel calmer and happier.
When serotonin levels are increased, typically, feelings of anxiety, stress, or sadness can decrease. Serotonin is a neurotransmitter that contributes to feelings of well-being and happiness, so when its levels are higher, it can help lower negative emotions and stabilize your mood.