A Man Called Ove, Fredrik Backman

Ove (Rolf Lassgård) is the quintessential angry old man next door. An isolated retiree with strict principles and a short fuse, who spends his days enforcing block association rules that only he cares about, and visiting his wife's grave, Ove has given up on life. After a boisterous young family moves in next door and accidentally flattens Ove's mailbox, an unlikely friendship forms.