Here is something that happened to me just recently but has reoccurred throughout my design career. The things I care about. The things I think are cool or good or difficult or clever are not always what others think are cool, good, difficult, or clever.
Most people walk around in their own bubble of interests. Most people are not designers. If you work with a team, what matters to any particular member of the team is what that person is interested in. It may take you 15 minutes to put together that flyer, but if that flyer is promoting this team member’s project, then that is all that matters.
My advice to you is to treat everyone’s project like it’s important. Don’t down play any work you do. Don’t sell yourself short because you thought it was easy. Put your best work forward always even if it isn’t what you consider challenging or especially interested. You’re helping to interpret and sell their dream, and that’s important. Always. That’s challenging. Always. Even if you did it before.
For the hard and interesting stuff, keep a side hustle. Find a way to fit in the work that you really want to do, the work that challenges you, the work you find interesting or cool, the work that makes you feel like a pro. You also need to please yourself, and the tough stuff will do that. Make sure you fit it in even if it doesn’t pay the bills because it will feed your soul.