I never made a sacrifice.

David Livingston said:

People talk of the sacrifice I have made in spending so much of my life in Africa. Can that be called a sacrifice which is simply paid back as a small part of a great debt owing to our God, which we can never repay? Is that a sacrifice which brings its own blest reward in healthful activity, the consciousness of doing good, peace of mind, and a bright hope of a glorious destiny hereafter? Away with the word in such a view and with such a thought! It is emphatically no sacrifice. Say rather it is a privilege. Anxiety, sickness, suffering, or danger now and then with a foregoing of the common conveniences and charities of this life, may make us pause and cause the spirit to waver and the soul to sink; but let this only be for a moment. All these are nothing when compared with the glory which shall be revealed in and for us. I never made a sacrifice.

I John 3:16  By this we know love, that he laid down his life for us, and we ought to lay down our lives for the brothers.
 For time in Africa we have already spent and including all the time we have yet to spend I will agree with D.L.  To find a perfect example of sacrifice read  Philippians 2:6-11.