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. A Sim who is happy can also become very happy. Events like the birth of a new child will make a Sim happy.

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

Interactions

 * Brighten Day (technically those with Charisma skill level 2 and above can do it regardless of emotion)
 * Heartfelt Compliment

Activities
Happy Text (Telephone)

Supportive Traits
These traits affect how often a Sim is happy.
 * Cheerful Sims tend to be happy more often than other Sims.
 * Sims that love the 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
 * Mean Sims become happy when doing mischief or mean socials with other Sims
 * Sims who hate children will become happy when being mean to children
 * Lazy Sims get happy if they sit and nap lazily and will be happy when watching TV
 * Family-oriented Sims get happy if they interact with friends and family members
 * Materialistic Sims get happy if they'd admired a new possession quickly
 * Ambitious Sims get happy if promoted
 * Noncommittal Sims will be happy if they break off a relationship or quit their career
 * Neat Sims will get happy when performing household chores
 * Foodies will be happy when the food quality is excellent

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
No jobs or careers will gain work performance if a Sim goes to work while happy.

Trivia

 * When the game first come out, Very Happy was called "Elated".