I'm gonna focus on the good vibe songs that I've connected with rather than the more angsty-feelsey ones.
Gold by Owl City
Shooting Star by Owl City
Gosh Adam Young in general...I've liked his music for a long while now. It's been with me through middle school, when Fireflies first gained popularity. His usual upbeat, catchy, and whimsical lyrics parted those metaphorical clouds that darkened my skies during rougher patches of my life. These two songs specifically speak to my creative and artsy side. It's basically him singing "don't let your muse die out! Keep creating!" which means a lot coming from an artist that actually gets the struggles of motivation.
Gym Leader's Final Stand from Pokemon Black/White/Black2/White2
I have been a pokemon for approx. 17 years. This is my favorite game franchise by miles. I've never had a "too cool for Pokemon phase" and I see no future where I'm living without it. Its practically in my blood at this point. I very clearly remember the hype behind Black and White's release. And it didn't disappoint. I was engrossed in my White version. The headphones never came out during my first playthrough. This game was amazing because of how innovative it was, both in and out of battles. One of these new additions happened during battles with gym leaders, who are a big deal in the games. They test your skill, smarts, and power as a trainer. If you can't beat them, you can't move on. When their final Pokemon comes out, your heart stops, knowing that this is it. This is the last obstacles between you and victory. You have to make the most of it. One slip up could call the curtains for your team . And boy-oh-boy could a song ever embody all those feelings at once. All the joy, apprehension, exhilaration, and tension of the last minutes of a battle all wrapped up in this amazing yet short song. You've trained so hard and made it this far. There's no way you can stop now. I can't forget how my breath caught in my throat, my eyes widened, and this huge grin appeared on my face when I heard this song for the very first time. That was the moment that I knew for certain that Black/White were going to be good games. (and hey, they remain my favorite Pokemon games to this day!)
(Hmmm...can you tell I love pokemon? I'm not sure I made that clear enough...heh heh)