An ultimatum is made in salvation: either you crucify the old man or the old man will crucify you; both cannot co-exist in salvation for long. The life of every living thing can only be perpetuated if it is fed; if you stop feeding something, it dies. So it is with the old man, or the old nature. You will never be able to mortify the old man unless you get brutal enough with it to stop feeding it, despite its cries to be satisfied. You must deny the passions that it stirs up in you! To mortify the old man is a commandment from God, so we see then that we will not get to heaven short of entire sanctification. If you are willing to go as far as you must, the experience of sanctification is as available to you as it was to anyone who has obtained it!