Automotive paint is so sensitive that even if a drop of sweat gets between the unfinished surface and a couple of coats of paint and sealant, it can cause major peeling problems down the line. So that means that the prep work that happens before the paint job, is very, very important.
When I do the proper prep work in my heart every day, then my actions - my visible witness to others - will be attractive and reflective of Christ living within me. When I don't do the necessary preparations, my "good" example starts peeling away. So, I must constantly monitor the exterior to see what needs work and when and where.
Philippians 4:8-9 (NIV)
8 Finally, brothers, whatever is true, whatever is noble, whatever is right, whatever is pure, whatever is lovely, whatever is admirable--if anything is excellent or praiseworthy--think about such things.
9 Whatever you have learned or received or heard from me, or seen in me--put it into practice. And the God of peace will be with you.
Psalm 119:9-11 (NIV)
9 How can a young man keep his way pure? By living according to your word.
10 I seek you with all my heart; do not let me stray from your commands.
11 I have hidden your word in my heart that I might not sin against you.