We all feel that we have pure motives and are basically good people. The real deep motives behind our actions are hidden even from ourselves. They are open and bare to God though. We can get a glance of our condition by reading and meditating on God's word. We all need God's grace!
All the ways of a man are clean in his own sight, But the Lord weighs the motives.
Proverbs 16:2 NASB1995