什么都不管只管努力微笑
[shén me dōu bù guăn zhĭ guăn nŭ lì wēi xiào]
It means 'Ignore everything else, only focus on smiling and trying'. The person implies they choose optimism, positivity, or resilience even when confronted with difficulties or distractions, advocating perseverance and a sunny disposition in challenging times.