Mu bushakashatsi bwakozwe mu myaka mirongo, harashizweho iciyumviro c'uko naho kwihangana ari ngombwa, gufata akaruhuko bishobora gutuma ubuzima burushiriza kuba bwiza. Mu gitabo ciwe Look Again: The Power of Noticing What Was Always There, Tali Sharot arerekana ko hari ivyiza biboneka iyo tuvuye mu buzima busanzwe.