Possible Clues:

• Trim market on Friday provides attraction that's to one's personal advantage
• Concern for number one
• Egocentrism
• Starts 18 across with appeal that's a concern to me
• Opens 18 across to give it to 7 down out of lack of consideration for others
• Trim market on Friday has appeal that's to one's advantage
• Good books on hesitation in my picture by footpath is to my advantage
• One's personal advantage