A suggestion: have a short recording (30-60 sec will do) of a young child laughing wholeheartedly stored on your mobile phone. It doesn’t even have to be your child.
There is nothing like such laughter to brighten the day.
Here is a sample, if one is needed:
P.S. no wonder baby laughter videos enjoy millions of views on YouTube. Turns out we can all use a laugh…
Learned from: passing by a kindergarten and hearing a child’s rolling laugh.