Or Biden could take a similar lesson from his immediate predecessor. Trump was always a minority president, but he governed like he had the biggest mandate on the block (White House insiders whispered that his mandate was really very small, well below average). Even after he lost his Republican majority in the US House, Trump still acted like nothing stood in his way.
There's some important things Biden can do by executive order, like first of all reversing all those Trump executive orders. Hey, Joe, govern like you have a pair. Impress the folks in the cheap seats.