Quote:

The notion that value is the central issue of the practice of sacrifice discloses the infinity of riches for which our life is indebted to this basic form. Since we strive to decrease the depth of sacrifice as well as the fact that we perceive it as pain, we are under a pre-occupation that it’s full disappearance will make life attain its highest value. This belief fails to recognize the fact that sacrifice is not necessarily always a foreign barrier that prevents us from achieving our goals. It is in fact the nature of the goal and the way to it. Since we tend to dissect the unity of the problem of out practical relations to things into categories of profit and sacrifice, of obstacle and attainment, and because these categories are typically separated into differentiated temporal stages, we do not realize that if a goal was granted to us without the interposition of obstacles it may no longer stay the same goal." George Simmel

Explanation: 

Sacrifice in itself is based on the loss of value, or a loss of significant measure. It reflects upon the fact that our lives are highly obliged as a result of the concept of “sacrifice” on the basis of value. 
In this passage, Simmel elaborates on the fact that sacrifices can be attributed to the nature of a goal. It is simply a part of the process of attaining the goal and is not due to human behavior. The sacrifice is an inner condition of the goal and the road to achieve it and thus one has to accept to these sacrifices. Also, at times, the sacrifice is an element of the way or method of achieving this goal.