Hello,
The quality of your egg depends on the routine you follow and your food habits. If you're routine is inappropriate, it may result in mutations or unwanted gene expression in the progeny.
Next Steps
You would have to follow a regular schedule of waking up early and sleeping early. Your food habits should not cause any problems like acidity, etc. Make sure you have a good bowel routine and period cycle. This is the primary step in improving the quality of your egg.
Health Tips
If you have any problems with regards to your appetite or general health, I would suggest you to consult a good Ayurvedic doctor to set your metabolism right.