It is undeniable that social connections and interactions are key to the human experience. Perhaps for this reason, laypeople and scientists alike have assumed that being alone is aversive, a state inexorably tied to lonely emotions and sense of isolation. Yet solitude is experienced daily by nearly everyone, and though it can be negative it can also be a constructive and rewarding time. What makes some more psychologically resilient to solitude and why do some experience fewer of the negative and more of the positive emotions associated with this potentially challenging state? The SOAR project, funded by the European Research Council, will integrate fragmented literatures and model contributions of predictors at event, individual, and cultural levels.