You don't want to regret life. You don't want to say had I known. You don't want to regret the day you were born. In fact, you want to be happy all your life. Why? Why must you be happy? Most people are wishing to be like you right now. You don't know who is watching and derives hope from just seeing you. Maybe your lifestyle motivates and inspires them and gives them the assurance that they will surely make it. So would you save a soul by living your life to show forth God's goodness or would you live to discourage people?
Think about what I have just said. Let's be ourselves and always happy and thankful. Doing this will surely make the world a better place for us and for anyone who might be looking and be motivated by us directly or indirectly.