Raise somebody’s spirits
Definition 1 of 1
Pro Tip 1/3Emotional Boost
Used when something or someone gives a person a positive emotional lift or encouragement. 
Just seeing her smile can raise someone's spirits.
Pro Tip 2/3Not Literal
It's a figurative phrase, not about physically lifting spirits or ghosts. 
The news of his recovery certainly raised their spirits.
Pro Tip 3/3Positive Context
Often used in situations that need optimism or when someone is trying to be encouraging. 
The teachers' encouraging words raised the students' spirits before the exam.