i feel like no matter what you do, pride is just a matter of how well you get the job done.
For instance some kids at school would call me an overachiever because of my grades. I on the other hand don't think so. I simply work on something (let's say a project) until i'm finished and
Im happy with it. When i get to that point i can look at my project and be proud of it, and will gladly tell anyone that it is
my project.
Same with marching band. Even if you guys are terrible, if you can look back and be happy with your performance than i feel like you have something to be proud of. Not necessarily being proud of the fact you are a cymbal, but being proud of the amount of work and effort that you put into your position.
And ultimately the more work that you put into something the more benefit you will get from it. For instance, our quad line this year put in a lot of work and a lot of time and we still had fun. And i can easily look back and be proud of what we accomplished.
My advice: work hard, and when you can look back and be happy with what you did, you're there.