You can live happy, because your happiness is up to you. Your level of happiness is controlled by you. It is a guarantee that things will happen that you are not pleased with, but how you allow it to affect you is entirely up to you. You can view the situation as a learning experience. An experience that you can grow from, or you can allow it to devastate you and ruin your life.
Live happy and grow from your challenges, people and things that occur in our lives are not perfect, but your thoughts about it can be. So, by all means, live happy regardless of what type of challenges that come your way. I Will, Will You?