Happiest

 从令天开始 

 Cóng lìng tiān kāishǐ 

Starting from the day

你要记住高职不如高薪

 Nǐ yào jì zhù gāo zhí bùrú gāoxīn

You have to remember that a high position is not as good as a high salary

高薪不如高兴

 Gāoxīn bùrú gāoxìng

High salary is not as good as happiness

高兴是生命当中

 Gāoxìng shì shēngmìng dāngzhōng

Happiness is in life

最重要的一味良药

 Zuì zhòngyào de yīwèi liángyào

The most important medicine

当你有水并且能喝水的时候你应该是最幸福的

 Dāng nǐ yǒu shuǐ bìngqiě néng hē shuǐ de shíhòu nǐ yīnggāi shì zuì xìngfú de

You should be happiest when you have water and able to drink water 

Cantonese say 

當你有水同埋可以飲水嗰陣，你應該會最開心

 dong  nei  jau  seoi  tung maai  ho ji  jam seoi  go  zan ，nei  jing goi  wui  zeoi  hoi sam