Yes, it is possible to feel happy and sad at the same time. Emotions are complex and can often overlap or coexist simultaneously. For example, you may feel happy for a friend who has achieved something great, but also feel sad because you are moving away and will miss them. Similarly, you may feel happy and proud of your child's accomplishments, but also feel sad because they are growing up too fast. It is important to acknowledge and accept these mixed emotions, as they are a normal part of the human experience.