Lau was out for months after a horse-riding accident in Thailand in 2017 while shooting an advertising campaign.
Recently, he had to abort some shows in a run of Hong Kong concerts because of illness, leading to ticket refunds and costs of rescheduling the performances.
Lau feels that these health episodes have also opened the dark side of human nature, with him realising that there is a limit to "friendships", and that he must rank the people supposedly close to him.
In another talk show in Hong Kong, he told the host that the unpredictability of life has made him realise that he may not always be there for his wife and daughter