Can we increase the subjective well-being of the general population? An umbrella review of the evidence Aleix Solanes; Anton Albajes-Eizagirre; Miquel A. Fullana; Lydia Fortea; Paolo Fusar-Poli; Carla Torrent; Brisa Solé; Caterina Mar Bonnín; Jae Il Shin; Eduard Vieta; Joaquim Radua;