What is integrity? It is generally a personal choice to hold oneself to consistent moral and ethical standards . It means not to comprise your valves. Having integrity can cause people to admire you.
Is your boyfriend asking you for sex? Say no and break up with him. This will show you have integrity and will even make him respect you . He might choose to leave or could even fall madly in love with you though you must not take him back unless he repents because you are a Christian.
Is your boss trying to get you to sign a false document? Refusing would seem very difficult but if you refuse -politely, of course- your boss and co-workers may sack you but they would respect you more for it and God has said he would provide for you.
Satan is the one making us to compromise our values. Resist the devil with the Word of God and prayer and he will flee from you.

Satan tempts people to make us do something wrong-We resist with the Word of God-Shadrack, Meshack and Abednego were told to worship the golden image but they refused and said God is able to deliver them but if not, they would still not serve the golden image. We would follow their example.
We also pray for God to help those pushing us to sin because the bible says love your enemies.

Even if we are beaten and killed like Jesus was, we should be happy because the bible says-Blessed are those who are persecuted for righteousness sake for theirs is the Kingdom of heaven