@Karmatose your journals look really great. What software do you use to draw, btw?
Typically I draw in Krita, but in the case of those journals I did the art and writing in a program called Inkodo. It's available on the window's app store. It's not really an art program, or at least not in the sense that you're probably expecting, but I used it in this case because I wanted a simple program that allowed me to make very simple sketches and didn't distract me with extra tools and what not.
I will say that erasing is a pain in Inkodo as you cannot erase a partial line. If you want to erase something, you must erase the entire stroke at once. I have no idea why it is like this, though.
If you're looking for an art program, Krita is free and provides a huge amount of functionality for the (non-existent) price tag. I also have a Wacom Intuos non-display tablet that I used for the art in those journals, IIRC it cost me something like $20 and has helped massively with my attempts at photomanipulation and digital art. I've seen people do amazing things with just a mouse and keyboard, but that sort of dedication (and damage to your hands) is not for me. ^^;
Good luck.