I was sent a link to this video on happiness and what it requires. I quite enjoyed it and there are some very interesting points raised.
I particularly liked the “baby learning to walk” analogy and felt that was something we martial arts types need to keep in mind when having a “bad day” at training :-)
I hope you enjoy it and find it useful.
All the best,
PS It can take a few seconds to start and buffer so please be patient.