It is completely understandable to feel overwhelmed by these symptoms, but please rest assured they are very common and highly treatable. Insomnia, restlessness, and irritability often stem from stress or anxiety. Because these symptoms can have various causes, I strongly advise against self-medicating. Instead, please consult a healthcare professional for a proper evaluation. Depending on their findings, they may recommend therapy or discuss generic medication options, such as selective serotonin reuptake inhibitors (like escitalopram) for anxiety, or short-term sleep aids. For now, try limiting caffeine and practicing relaxing bedtime habits. Please schedule an appointment with a doctor to find the safest solution for you.