It's not jobs I hate so much. I enjoy working. The real problem is that I grow tired of doing the same thing all the time. having someone else set my schedule for me.
I like my job, but sometimes I'd just rather do it later, or earlier, or tomorrow instead of Saturday. I'd like to skip out in blizzard season, and double up in spring. But the library has set hours, sadly, and people expect us to be there when we say we will.
As to doing different things all the time, try working in a library. You never know what you'll be doing next. Helping someone find info they need, tutoring kids after school, troubleshooting nonworking phones to send a fax, helping patrons upload photos to email for an insurance claim, dealing with the VPN crashing, promoting an online e-book club, creating sliders for the library website, coaching a drama club (or acting alongside the teens), teaching a STEM program on wind power, running preschool story hour, organizing a book sale, creating flyers and artwork, showing people how to use Ancestry.com, running Game club and Lego club... Honestly, the first half dozen things on that list was just the unusual parts of last Thursday afternoon. It's especially fun when I work alone!