Which character trait is necessary for a person to be in a healthy relationship?

Some of the main traits of a healthy relationship are respect, trust, honesty, fairness, equality, and good communication. Some characteristics and skills found in healthy relationships include: Respect for each other, which means showing consideration for the feelings and well being of the other person.

you may having too much sleep.. a good night sleep consists of about 7 hours. more than that could be the reason you're still tired throughout the day.

because health skills are tools and strategies and also practical skills are also something you need to learn (like tools and strategies) and put it in reality.