I am creating a video that is sort of a "montage of my life" but I am having trouble picking a song to play in it...

Any suggestions? I am looking for something that celebrates life, so nothing sad. I also want the song to be an accompaniment to the video (which will be short clips of various important events that happen in my life within the next few months) and not to overpower the footage and make it seem like a music video. If you guys have seen videos that are similar to my idea, please send those over too! I'd love to take a look at how someone else has done it. Thanks!!