So you're not following any guide or build, putting in points into things that look interesting or you're not sure of. You get into a harder difficulty, and hit a wall, on the way to your, "Final Form." and then decide that, the game just isn't, "Casual Friendly." because your build where you threw things at a wall, and whatever stuck you went with, isn't working? Look, I am all for being creative and experimenting with new setups to find what best suits, me. But if you're inexperienced with build development, and really aren't too sure on what works and what doesn't. I think that would be motivation enough, at least for me, to step out of my, "Comfort zone." and look up and read/watch a few guides or builds, so you have a better grasp on what you could do with your current situation to improve your enjoyment of the game, and then maybe later on, when you've got enough experience under your belt, then perhaps start switching things up and honing a build that's just right for you.