Great call on "Orange Tree Roads", this always makes me smile no matter what. There are so many NMA songs that are just as good in that department.
There are also a number of songs from my youth that also trigger good feelings and memories:
- Just the opening bars of Alternative Ulster send me back there to good old care free times. Teenage kicks too. (guess where I'm form?)
- Surprisingly Joy Division also makes me happy, especially the album tracks.... I'm weird I guess!
- Bad Religion's Suffer and Against the grain albums
- Suicide Machine's first Album.. catchy ska punk gets the head and feet moving.
- This one song is also really good at giving you a kick in the arse to think positive

is by a somewhat obscure Swedish band...
https://www.youtube.com/watch?v=y9Pqw01uZfE There are some many more. Music is a great companion on the roads we take.
Hugs to everyone from California.