Not to be a sap but what a metaphor: in the face of uncertain tomorrows, you'll always have yesterday to rely on.
Somewhere in the future, your today is the good old days. There is a good chance later in life, you want to live your today’s good old days, despite its shortcomings.
Stoic #1: Use Prospective Retrospection to Minimize Future Regret
When you are going through a difficult time, ask how you might feel about this in six months, a year, or even ten years down the line. Imagining how future you would think about your current situation often reminds us that whatever we are going through is temporary. And that in the future, it’ll be an indistinguishable blip in our life story.