When you respect yourself, you can respect others.
When you respect others, you will be able to respect yourself.
Both types of respect add to the other respect.
Respect for self is very important. It stems from good humanity. When you practice human values, and are good to others, you feel good about yourself.
When you are feeling low, something is probably missing in your humanity. Just become extra nice to everyone, give everyone that extra respect, then automatically you will feel good about yourself.
Respect for self, respect for others.
It's one of the keys to happiness.