In cricket, if a batsman gets to 50 runs it represents a small milestone. It’s only halfway to a century, which is a significant achievement. But at 50 runs, he or she would raise their bat and acknowledge the applause of the crowd.
They wouldn’t do it in an overly congratulatory way. It’s just a small milestone. It is correct to acknowledge it. But then immediately get back to the job at hand - facing the next delivery from a bowler who’s only ambition is to get you out.
Day 50 of Lockdown has felt like that for me: a small milestone worth acknowledging, but at the same time knowing that the really hard work lies ahead. And that I’m already tired from the effort I’ve put in so far.