No matter how hard life is, you have to stay positive. It sounds a challenging thing to do, but you do not have to make a big step right away, as a small change can make a difference.
If you are happy with your life right now, you can use the Relieved Face Emoji to indicate it ????.
Moreover, the Relieved Face Emoji, which has a yellow face with raised eyebrows, closed eyes, and light smile, can mean that you are content and at peace right now. Use it to express your gratitude to someone, too ????.