One song in particular that always seems to pick me up is I Can See Clearly Now by Johnny Nash.
I have many, but here's the major ones:
"Jeremy", "Given To Fly", and "I Am Mine" by Pearl Jam
Robin trower long misty days
Super freak by Rick James
You are the "New Day"
Very special to me.
How Am I Suppose To Live Without You by Michael Bolton.
Magic / Olivea Newton John.
Any song by Home Free.
Pilgrim by Enya
everything's gonna be alright