Many times we tend to value the flesh over the spiritual matters. In times of need we tend to run to drugs, loved ones, sex, food, and all sorts of things for comfort, but rarely run to the creator. When we go running to the physical things over the father we are left unsatisfied time and time again. We cannot gain eternal peace by trying to feed an earthen vessel that is meant to disintegrate back to dust. The only way to gain true peace is by feeding the spirit, because that is where true life is.
Our master Yahshua Hamashiach taught a great lesson on this subject on how to gain everlasting life and not depend on temporary fixes. He said in John 6:47-51 "Verily, verily, I say unto you, He that believeth on me hath everlasting life. I am that bread of life. Your fathers did eat manna in the wilderness, and are dead. This is the bread which cometh down from heaven, that a man may eat thereof, and not die. I am the living bread which came down from heaven: if any man eat of this bread, he shall live for ever: and the bread that I will give is my flesh, which I will give for the life of the world."
So are you willing to sacrifice your flesh for a bigger spiritual goal? Or are you willing to die in the wilderness trying to depend on physical things to sustain you?
Don't depend on anything that doesn't last forever.