Cancer is already a horrible way to go for Ben, especially when he initially got rid of it, so him stopping his sister from being in a life threatening situation and getting shot wasn't much of a choice, but life of him helping everyone he could, came to an end.
He could die conviently without his family wasting money on a cancer that couldn't be suppressed, and was to painful to leave with, least he saved someone in the process, he felt good. His eyes closed.
He awoke to learn he will be given a second chance, as Bo Wen in a cultivation world, and given a boost to help in his cultivation, as he is in a family that's going through war of regions, as he trys to help in and see off this life in a way that he would be proud of.
Note from author: This is a... slow burn like story, it's slow when it wants to be and quick when it needs to be. Just breath in the moment, there is nowhere to rush to, let's just enjoy the moment. God bless you, have a wonderful day