乐观
lèguān · HSK 3
be optimistic
😊 乐 = happy/music + 观 = view/outlook = happy outlook
乐 (lè) means happy or joyful (also 'music' as yuè); 观 (guān) means to view or observe. Together: a happy way of viewing things — optimistic. The 见 component in 观 hints at 'seeing/perspective'.
乐 — stylized depiction of a wooden instrument with strings
Originally a pictograph of a wooden frame holding strings or bells, representing a musical instrument. The character first meant 'music' (read yuè), and by extension came to mean 'joy, happiness' (read lè), since music brings pleasure. The simplified form 乐 streamlines the older 樂.