When I feel sad I just repeat this over and over in my head:
"I tell myself I (feel no pain)
But I'm feeling the pain (walk away)
Can't walk away
I'm hanging on the ropes of hope
It's getting hard to cope you know
When you're the needle running
through my veins
I've changed my name to Novocaine"
It's the chorus of the song "Novocaine".
Even when the rest of the song doesn't have to do anything with your circumstances. The first and the last line are the ones that make me feel better.
When you are sad, listen it, It will maybe make you feel better!