The Lord will fulfill his purposes for me; your love, O Lord, endures forever--do not abandon the works of your hands.
One of the biggest things I found from this verse is peace. Whatever my purpose is, it will be fulfilled because God will ensure it. No opposition, trouble, or detour is outside his plan.
Even my own failings cannot stop my purpose from being fulfilled! Believing this more has produced peace, hope, and joy in my life. It has also reminded me that I need to be seeking my purpose from God, not merely pursuing what I am interested in (though interests can be clues).
I need (and want) to be talking about it with him more in prayer. What did you make me for? What good works have you prepared for me to do? In what ways have you gifted me to build up others in Christ?
It is no coincidence that purpose is tied so closely to God's love. Because his love endures, our purpose endures. Because he is faithful, we can have hope.
And this last part about us being the works of his hands is a humbling reminder of our place in earth. We are something that he has made. We are not in charge, and we are small and humble, yet we are precious.
This goes along with the idea of humility that I have been getting from other passages in the Bible about how humility is accepting our proper place, not the first place, which belongs to God, but nevertheless a place where we are loved and satisfied. The proud cannot accept this place, seek a higher one, and do not find joy and satisfaction.