People worldwide have witnessed the devastating impacts of the COVID-19 pandemic: massive loss of life, deep economic recession, and disrupted social lives. The disastrous experience reminds us of the inseparable fates of the humanity. In order to overcome this pandemic and other global crises, as global citizens, we must act in unity, sooner rather than later. Other global crises such as poverty and hunger, extreme climate, as well as war and conflicts are also influencing the life-and-death situations of millions of people worldwide. Extreme climate has brought droughts, floods, and typhoons, which have intensified poverty, hunger, and health problems over the globe. Wars and conflicts not only create injuries and deaths, but also disperse people to be migrants and refugees. Global citizens need to participate in solidarity action for the Sustainable Development Goals (SDGs) to competently uproot these global challenges. This essay examines why goals, 1 (no poverty), 2 (zero hunger) and 10 (reduced inequalities) matter to us and the importance of fixing these global problems for a better more united world.