Happy

Happy is an emotion available in The Sims 4. It occurs when a Sim performs a positive interaction, succeeds in an interaction or enters a room with wall decorations. Having Happy moodlets will boost the effects of other positive emotions like Flirty, Focused, Inspired, Energized, Playful and Confident.

Interactions and Activities
Sims will only have a chance to use these interactions and do these activities while happy.

Interactions

 * Brighten Day
 * Heartfelt Compliment

Supportive Traits
These traits affect how often a Sim is happy.
 * Cheerful
 * Sims that Love Outdoors will become Happy when outside.
 * Good Sims will become Happy when around Sims feeling positive emotions.
 * Evil Sims will become Happy when around Sims with negative emotions.
 * Bros become Happy when around other Bros.
 * Loners become Happy when alone.

Object Auras
These are items found, bought, or earned in the game that can emit a happy aura in the area around the object. Players can choose to enable or disable the aura at any time. Once enabled, a Sim can interact with the object, through viewing or using it, and they will earn a happy moodlet. Whether their mood changes to happy or not depends on the other moodlets affecting the Sim at that time.

Whims
Happy Sims may get the following whims:
 * Dance to Stereo
 * Hug another Sim
 * Call Someone on the Phone
 * Chat with Someone
 * Tell a Joke
 * Meet Someone New
 * Make a Friend

Careers and Jobs
Sims with these jobs or careers will gain work performance if they go to work while happy.