I can say "I feel happy," or "I'm thinking happy thoughts."

我可以说“我感到很快乐”，也可以说“我在思考着些快乐的事情”。

youdao

May the warmest wishes, happy thoughts and friendly greetings come at New Year.

让温馨的祝愿、幸福的思念和友好的祝福，在新年来到你身边。

youdao

It made you just want to lay out there and catch rays and think your happy thoughts.

让你只想躺在那儿，晒晒太阳，想想开心事。

youdao

Republicans seem to think government just grows on trees and happens due to happy thoughts.

FORBES: Connect

Tilstra was happy for the chance to share her thoughts at the Lean In circle last week.

WSJ: The new book group? Women form 'Lean In' circles

At the moment, when he fulfils his destiny in Britain, realms which were once happy to have the Queen might begin to have second thoughts about her son.

BBC: NEWS | UK | No mention of the 'r' word in Oz