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Even though I know this is human it's still annoying.
I can spend 4 or to 6 hours completely focused on editing photos and videos or designing a book.
But I can't even regularly spend 30 minutes to 15 to try and learn a new skill that I've always wanted to learn, or some self care for myself.
Why why why why Whyyyyyyyyyyyyyy! 
@Mr_NutterButter
It's the minutia. You can easily bypass it with something you know, but it's hard to get "your desk in order" to get started on the new task.
I always enjoyed watching woodworking and learning how it worked, but never really did anything until I had a small, simple project to do with it. Maybe you try doing something in the new task and see how well it comes out.
Hopefully, that can help. It's fun learning.