We often burn our bridges – seems like the best option, in addition to sounding so fancy. There are so many problems with this one though. Life is too short, there are only so many ways to cross (often times one-way, no way (!) or dead ends) and sometimes you do not even have much options to fall back on!
A bridge well-crossed gets better over time. It may not always be the easiest thing to do. It may not always be your first or your best choice.
Do not burn your bridges, there was a reason why they were built in the first place. Do not push through, knock down or walk over – you hurt both people as well as your reputation!