David Clarkson writes in his excellent Soul Idolatry:

That choice of Christ is only real and sincere, when the soul takes him, not only as a Saviour, but as a Lord.  Try, then, by this.  Are you as willing to be commnaded by Christ, as to be saved by him — to submit to his laws, as to partake of his benefits?  Do ye desire him as much to make you holy as to make you happy — as much for sanctification as for salvation — as much to free you from the power [of] sin as from the guilt of it — not only that it may not damn you, but that it may not have dominion over you?  If you do not choose Christ for this, and in this manner, you choose him not at all.  ‘Tis plain, while you would have Christ for your Saviour, something else is your god.