How to replace a shifting cable

What is your question?

Shifting was fine at first but after owning the used car for about 3 weeks the shifting became harder and harder then shifter snapped .I replaced it then drove the car for 1 day then it broke again and then the car got stuck in 1st gear .can't start car cause it won't shift.so my question is if I release the cable from the transmission will I beable to get it into drive if I remove it from the transmission end and then replace