Awareness of our insignificance is incredibly freeing. It means that you get to assign your own purpose to life because that’s all it matters to.
As long as you’re not infringing upon the life, liberty, and pursuit of happiness of others, then everything else is completely up to you! Have fun! Play video games! Eat great food! Make others happy! And don’t worry about your mistakes or being humiliated because none of that really matters after you’re gone.
In the end, only you can make your life worth living.