If only we could love ourselves enough to dare to approach God, what constructive dreams he would give us! What noble possibilities God wants to reveal to us - possibilities that would offer stimulation plus real security in service. But we feel too unworthy. So one layer of negative behavior is laid upon another until we emerge as rebellious sinners. But our rebellion is a reaction, not our nature. By nature we are fearful, not bad.
Robert H. Schuller... the core of sin is a lack of self-esteem. ... Sin is psychological self-abuse. ... the most serious sin is one that causes me to say, 'I am unworthy. I may have no claim to divine sonship if you examine me at my worst.' For once a person believes he is an 'unworthy sinner,' it is doubtful if he can really honestly accept the saving grace God offers in Jesus Christ.
Robert H. Schuller