You get a lot of days, but not unlimited ones. Treat them like a big allowance, not a bottomless one.

A large number still has an end to it, and a large allowance still runs down. Treating days as endless leads to spending them carelessly, which feels fine for years and then stops feeling fine. The useful posture is neither panic nor indifference, just a working awareness that the supply is finite.

Look at the next seven days and choose two you want to actually use for something. Leave the rest ordinary, which is completely allowed.