Friends and Loved Ones with Opposing beliefs. - How to deal ?

My environment is very liberal. I love these people but perhaps one of their view points that I cannot seem to get over is their pro-choice position. I, on the other hand truly believe that all life is sacred.

As much as I try to reconcile that people can have their own views, I often find myself worrying about my friends, praying for the Lord's mercy. How does one deal when your friends beliefs are so contradictory to yours ?