The phrase "to break the streak" means to put an end to a sequence or pattern of events, usually those that have been happening for a long time, especially when they are seen as negative or unwanted. Full definition
Many players will intentionally avoid winning just so they don't have to try and break the streak of winners who haven't captured the green jacket. (sbnation.com)
The goal was to not break the streak and at the bare minimum write a joke a day and after 10 years you would be funny. (entrepreneur.com)
So I decided to break that streak with a fresh spinach salad. (laaloosh.com)