The unsaved can attempt to obey all of the Ten Commandments and do all the sacrifices that the Old Testament speaks of, but that unsaved person’s sacrifice is an abomination to God! Why? Because the unsaved do not have Christ as his/her Saviour. They have not accepted His precious blood as payment for their deserved punishment.
Proverbs 15:8 The sacrifice of the wicked [is] an abomination to the LORD: but the prayer of the upright [is] his delight.
What God delights in, however, is when His child, the one covered by the blood of Jesus Christ, prays to Him. How much time do you spend talking to God? Do you take time to tell Him your troubles? Do you talk to Him about your unsaved loved ones? He is delighted when you do 🙂 Like anything else, you must plan to include prayer in your day!