I'd gotten to the point where I was very bored of Skyrim, just having no ambition to play even though I liked the game.

So I deleted all my saves and acquired mods that add more "realism" to the game in terms of making my carry-weight very low and only brought up by using bags, and making AI smarter and such.

The biggest thing which I've done to make my game more challenging and rewarding to me in general was this, I used the console to make my health only 15, and then I put the game on the easiest difficulty.

This makes the game amazing for me, you can die very easily and everything else does to, It is challenging and more real to me, It always felt wrong that enemies could take a brutal beating as I stabbed them over and over, with this, everything is done in a few hits and you really have to be skilled to not die, and think outside the box to succeed.

Definitely recommend for others to try.