We got lucky early on that we found things that calmed Cameron down fairly easy when she would get fussy.
Now these may not work for everyone, but similar things may work for you.
We found that this girl loved music. I did try my best to listen to music and read to her throughout my pregnancy, as well as try to instill my love for Disney in her. Well shortly after Cameron was born and she was being a bit fussy we would turn on the Disney Pandora music station and it would calm her down. We tried other stations but none compared to the Disney ones. Luckily Disney has many pandora stations so we had a lot to choose from and much variety.
The other thing that really calmed her down was the sound of Disney movies. But mostly Moana. I’m pretty sure in the first year of life we watched Moana over 400. And, yes letting the child watch tv over and over isn’t the best, but we weren’t sitting her down in front of the TV. It would be on in the background during tummy time, or the soundtrack playing during bath time, or in the car on the way to doctors appointments or running errands. But she loves that movie, and to this day when we bring out the DVD it makes her so happy. So I’m happy there because I may actually get a mini me that loves Disney like I do.