Just because you appear to be happy most of the time does not mean that you do not ever feel sad. Of course, you do. Everyone does at some point. To think otherwise is quite a stretch. Thing is we all have choices in our lives and being happy is one of them. Yes, you should do it accordingly, at the correct setting. You cannot possibly be or show that you are happy when attending a wake. But most of the time, you can choose to be happy and let that positive energy transmit from you. Share your gratitude for what you have. Your clear understanding that the only person that you can control is yourself and how you react to external factors. Prep yourself mentally and physically. Give the best of love you can to yourself and make a conscious choice to choose to be happy.