A retrograde planet is not a curse and not a cancellation. In BNN it is a rewind - a planet that must go back before it goes forward.
The three-house shadow
A retrograde planet casts influence across three houses: the one it sits in (the present), the one behind (unfinished business), and the one ahead (anticipation). It revisits, reworks, and only then releases.
A retrograde traveller goes back before going forward.
In a marriage house, a retrograde planet often shows a partner who appears, withdraws, and returns to stay. In a career house, it shows the same mountain climbed more than once. The event is not denied - the rehearsal simply runs twice.
Read that way, retrograde stops being something to fear and becomes something to plan around.