Over various points, I have thought about what influences how well you can do in something and what you can achieve. I was thinking more particularly about all those moments where it all seems undoable and you want to give up on what you are working towards. The really hard points where you can lose the reason why you started in the first place and it all feels uphill. The defining moments where if you choose to carry on, it could be the difference between you achieving something or not achieving it.