@AkabaneKarma25 That's the wrong way of looking at it. The way you should be looking at it is this:
If you can cringe and gave trouble reading your own work is sign enough of how much you have improved, and if you hadnt written those pieces, you would never have improved in the least. Its actually a good thing to find your older work is less clean and readable than what you write now :)
I've kept every piece of writing i have done purely because i am proud to see just how much my writing has improved, and if ever in doubt i reread it to remind myself :)