Here are some quotes. Some which I came up with myself.

"No one is perfect."

"Never give up."

"Always try your best no matter what."

"Take a deep breath and relax. You can get through this."

"Embrace yourself."

"If anyone is mean to you, it is them with the problem NOT you."

"Smile. Even when things are not going well."

"Everyone has talents. Embrace yours."

"Pamper yourself. You deserve it."

"One healing power is chocolate. Eat some. You will feel better."

"It's ok to cry sometimes."

"Never put yourself down."