Become more optimistic by imagining a best possible self: Effects of a two week intervention

► Best possible self (BPS)imagery led to larger increases in optimism as compared to daily activities (DA) imagery, after one session and over a two week period. ► Intervention effects on optimism remained after controlling for effects on positive mood. ► The intervention effect was not moderated by baseline dispositional optimism or ma priori motivation. ► BPS effects (primarily targeting future expectancies) generalized to attribution style.