By & by Chris Harnick | Tue., 7 Jan. 2020 9:00 AM Share Tweet Email Pop The old saying is, “It’s so hard to say goodbye,” and knowing how and when to bid farewell in the world of television is an even harder feat. Some shows last beyond their expiration date. Some shows end before they really get going. And then there are shows like Schitt’s Creek. The Pop TV comedy reached new heights in season five in terms of viewers and accolades, and now it’s all coming to an end with the sixth and final season premiering Tuesday, Jan. 7. But don’t worry, series star and co-creator Dan Levy has planned for this for years.Levy said he was thinking about the ending for the Rose family long before announcing the sixth season would be the show’s last. And if he did his job right, it’s an ending that will leave fans satisfied while doing right by the characters they’ve come to love. Photos Schitt’s Creek Final Season First Look “I mean, I give every season, and particularly every season finale, an intense amount of scrutiny and time and consideration. And this being the series finale, I think it was something I’ve been thinking about…