One of the biggest mistakes we can make about our own security in Christ is to base the reality of our salvation on our feelings. Our emotions are affected by so many different things that it is misleading to base our security on them. Each of us grows up in an environment that leaves us with emotional scars.
Some people feel anxious and tense because of events in their past.
Others are afflicted with anxiety because of neurological disorders or imbalances in body chemistry. Since salvation is based on belief in Christ and a choice to trust His death on our behalf, the road to assurance is not found in our feelings but in acknowledging and trusting what God has done. This, however, is a gradual process, and one that may involve many setbacks. It helps to share one's doubts with a Christian friend, pastor, or counselor. Just talking to another person can help us see ourselves and our situation more clearly.