People will not buy your book if they don't like the cover or title. Remember that 98% of the time it will be seen first as a small digital thumbnail. Keep it simple and clear
Who can truly know a woman? But seriously, listen to how women talk. Don't over think it. Ask a female friend to read and critic some of your dialogue. Practice, practice, practice...
Patience & perseverance. Writing is not difficult. Writing well is the challenge. Surround yourself with positive people and give yourself a break. This is suppose to be fun!