We've switched to using Kanban at work. I won't go into all of it, but one thing that has really helped is to have all the tasks in progress on a board where everyone can see them. And only have one task in express lane and two non-express items at any time. You haven't said whether the problem is too much work or competing priorities (or both). Whatever it is, this has helped me.
What were you using before the switch to Kanban? This is very interesting to me, the idea that just switching up techniques can have that much of an impact on how you feel at work.
Boiling frog syndrome in a way(1)
Not having to decide priorities is a massive relief; the product owners know they have to discuss priorities with each other and my team leader, not me.
(1) yeah I know it's not an accurate analogy.