How many pages does your resume fill? Are there clearly defined sections with bullet points? Or is it a long rambling narrative listing every single job since delivering papers in 10th grade? Does it list EEOC hot-button items such as your marital status (bad) or gender (bad)? Did you include your contact information?
Have you considered starting a ground school at your local airport? Or giving WINGS Seminars on topics you'd like to become an expert in teaching?