Information to help others understand our difficulties

One of my greatest difficulties at work is managing change. When there is a major change ahead I plan as much as I can and each day I tend to plan what order I will do things in. Some things I do in the same order every day.

This week I was thrown by a sudden one off change that was a change from the norm and I couldn't understand the reason for it. I ended up having a discussion with my team leader and getting quite emotional. To a NT I guess they would not understand the impact of a minor change with no warning, which affected my plan.

I was wondering if anyone could point to any useful information that might explain how this feels to an autistic person. I am not very good at explaining this myself.