“I wasted 10 years of my life!”
ha ha, amateur
No but honestly though, what a depressing way of looking at your life and your possibilities if you conclude that you're not going to make it as a creator, simply because of picking the wrong school when you were still a kid. Now, it's another thing entirely if you aim to be something like a world class gymnast or pop idol or violinist(?), but although difficulty may scale with age, there's certainly no upper age limit to becoming a producer or programmer or writer or composer or illustrator. (Nobel literature prize winner Toni Morrison debuted at age 39. J.K. Rowling wrote Harry Potter when she was 30. In visual novel territory, Gen Urobuchi was 28 when he debuted with his first game script.)
I do read and enjoy many of these life-redo-stories, but that's kind of a problem I have with many of them: they are defeatist. They're appealing (hell, I'd probably go for it), but also depressing. When the story is “I'm a loser but I reincarnated/transported/time-traveled and have a second chance to be a winner, but now with cheats I didn't actually earn”, it's basically reinforcing the idea that if your life sucks then you're just F'd, nothing you can do but get God to give you a second chance and some godly training wheels – and us readers don't get to meet God.
Sorta like ReLIFE, yeah, but also not: ReLIFE is about redoing a year of high school to deal with grown-up mental/social issues, without the aid of precognition. It was always only going to be temporary.
Not that any of this is to be taken as criticism of the genre or of this work as such. Just saying that if you think about it, it's not very inspiring. At least it isn't to me.