Anecdotally, I relearned[0] to read and write in Arabic in 2016. When I started I could just recognize some letters off-hand and when I stopped I had the reading ability of a six year old[1]. I excelled quite rapidly and it's coincidentally tied to a time of intense emotional and intellectual development for me.

Even my skills in programming have doubled or tripled during that time. To the point where the then-CTO of the company picked it and brought it up. I went out and doubled my salary and job responsibilities a year later.

I'm not sure if it's related to the reading, or if the reading was a side-effect of it, but I thought I'd share.

[0] I attended a weekly class for several months when I was 8 but we didn't get through half of a first grade book.

[1] Although I can make out the letters and can write pretty good too, it takes me longer than usual and I usually can't make sense of 60% of what I'm reading because written Arabic is in the very formal MSA and I'm only familiar with a regional dialect. A comparison to this would be someone who's only familiar with NY-borough slang trying to make sense of Shakespeare.