Some people believe that making the morally right decision makes people feel good. However, until now, there has been no empirical evidence in support of this belief. In a representative two‐wave longitudinal study of 995 15‐year‐old adolescents followed for 3 years (until the age of 18) in Switzerland, adolescents were asked about their decisions and emotions following hypothetical dilemmas involving moral obligations versus self‐interest. Adolescents predominantly made moral decisions and reported feeling good following these decisions. With age, participants reported more positive emotions following moral decisions. A small number of adolescents made selfish decisions and reported feeling good following these decisions.