I really tried to like this movie and as IMDb shows here, some others were more successful by doing so than me. Yes this movie has good ideas and yes it is a psychological study of a bodyguard ... you could say a documentary.
And by being or feeling like a documentary it dries you up inside. In other words it gets boring. Why does it get boring? Because the work of a bodyguard is boring. I don't need 20 scenes that tell me, that the life of a bodyguard sucks ... 2 or 3 would've been enough! For me this movie was a waste of time and opportunities ... they could've either created some drama, but more importantly, they could've shortened the movie a lot! Better yet, they should have!