Cast & crew
How Happy Can You Be? (2005)
Directed by Line Hatland Written by Line Hatland
Cast
| Sonja Lyubomirsky | Herself |
| Robert Schwartz | Himself |
| Ruth Veenhoven | Herself |
| Joar Vittersø | Himself |
| Line Hatland | Jerry Thompson/Narrator |
| Robert Biswas-Diener | Himself |
| John Cacioppo | Himself |
| Ed Diener | Himself |
Crew
| Håkon Iversen | Original Music Composer |
| Erik Edland | Director of Photography |
| Odd Reinhardt Nicolaysen | Director of Photography |
| Øyvind Rostad | Executive Producer |
| Hanne Myren | Producer |
| Jacob Risdal Otnes | Editor |
| Line Hatland | Director |
| Line Hatland | Writer |
| Jan Otto Ertesvåg | Animation |