I would say my first one is The Spirit Carries On.
When my Grandad passed away 2 months ago it helped me to think, where is he gone? is he okay now? etc.
My second song for when I was younger was Finally Free, helped me get over a couple of ex's lol!!
The song worked very well and cheering me up.
Last but not least, Surrounded. The way James sings that sends me shivers down my spine, it's so beautiful.
What about anyone else? What songs make you're day?!