Psalm 139 v 1 – 24 is a psalm that answers this question completely. If ever you feel worthless or of no importance to God you should read this Psalm. It tells you that God knows all that you do. He knows your sitting down and your rising. He knows your comings and goings and is acquainted with all your ways. There is nothing you say or are going to say that He does not know.
David asks where can he go from God’s Spirit? The answer is, no where, God is everywhere. Above, below, all around you. In the light and in the darkness, God is with you. This Psalm goes on to say that God formed you, everything about you is fearfully and wonderfully made. He knew you before you were created and even before you were born He knew your days!
You know what's amazing? We think God doesn't even think about us. He has more important things to worry about, but His word says differently. Psalm 139 v 17 –18 says: How precious also are Your thoughts to me, O God! How great is the sum of them! If I should count them, they would be more in number than the sand…! Is that not amazing and humbling? This awesome, mighty God’s thoughts of you and I number more than the all the grains of sand?
Once we come to that place of realizing that God loves us faults and all, we shouldn’t have a low self esteem. Easier said than done, I know, but it’s that knowledge with which we can begin to heal ourselves of low self esteem. We should be like children that know their parents love them and go about their lives confident in that knowledge.
With confidence in His love we should come before the Lord and ask as David did, Search me, O God, and know my heart and see if there is any wicked way in me, and lead me in the way everlasting (Ps 139 v 23 – 24). David was far from perfect but he was really good at acknowledging his faults and coming before the Lord to deal with his faults. He had the confidence to do that because he knew, in his heart of hearts, that God loved him completely.
So that is my encouragement to you: Know how much God loves you, read Psalm 139 out loud until you believe it and you will handle your daily walk more confidently in this knowledge.