"...the only way humans have ever figured out of getting somewhere is to leave something behind." -TARS , Interstellar
You won’t be the same. Your wife won’t and your kids won’t. Every other biggest challenge you faced, at the time, felt like the floor dropped out. You met it and were strengthened by it. You became a better man because of those sacrifices you made and the impossible challenges you faced.
We are only made better by sacrifice. There is no joy, triumph, or anything new, without sacrificing something else. Whether it’s Newtons 3rd law or thermodynamics.
Jesus knew his teachings could live forever, but that it also required a proportional sacrifice.