The "Where do I start?" beginning is the hardest. It means the bottom has completely dropped out unexpectedly, and we are scrambling to face a world that has changed overnight.

In order to be able to better handle changes:

The "I know I have to" beginnings are a bit more challenging to handle than the desired ones. This is mainly because we do the changes as we need to instead of actually wanting them.

This is the " Please don't make me do this" type of change.