All this deep stuff about rationalizations and humanness. Let’s take a break.
Back to the practical level.
Always keep three pens and a sterilized needle with you when you’re writing longhand. Odds are, at least two of the pens won’t work or will peter out when you’re in mid-chapter, at which point the third one will avert an ugly display.
And if the third pen goes belly-up, a quick sweep of the needle across your forearm [for dramatic effect] will provide you with enough fluid to at least finish that page and get you to Urgent Care.