My shift got changed, but I'm going to ignore it.
Why would you ignore your shift change?
Honestly, I don't want to come to work today.
You should always be responsible for your work schedule. If you don't want to work, then try to change your schedule with a manager.
Ugh, this job is so boring. They expect me to be here 24/7. If I want to take a day off, I should be allowed to.
Boring jobs can be tedious and you do deserve a day off, but you need to be responsible about your schedule. I think you should talk to your boss and schedule some time off so you can have a break. This way you get time to yourself and you're respecting your work schedule.