143:7 David requested a quick reply to his prayer since he felt he would die if one was not forthcoming immediately. Hiding ones face pictures making oneself inaccessible.
143:8-12 First, David wanted guidance from God (v. 8). This would be a fresh morning-like expression of the Lord's loyal love to His trusting servant. Second, he asked for deliverance from his enemies (v. 9). Third, he needed teaching from God's Spirit who would provide safe direction (v. 10). Fourth, he requested restoration from the attacks of his enemies (vv. 11-12). Each of these petitions also contains some reference to trust in God.
Even when God's people sin we can appeal to the Lord for help and restoration on the basis of His faithfulness and righteousness. This psalm beautifully combines humble requests and appreciation for God's character.