Increasing focus & concentration?

I've always exercised, done lots of maths/thinking, ate sardines/chocolate/eggs, slept 8 hours, drank 8L of water a day etc etc. Still my focus was crap.
I honestly think mindless internet browsing damages your attention span like nothing else.
I quit mindless internet surfing, apart from Veeky Forums at dinner. Less thsn an hour a day, and I do honestly learn a lot of stuff from here.
Replace it with content that requires you to focus. Read a lot of books, read articles on Aeon and Nautillus on your lunch break (looking for suggestions)
I started meditating.
I feel like my executive function has tripled

Quit eating sugar.
Get enough sleep at regular times.
Find something interesting to work on.
Use that to practice focusing.
...
Profit.

no

here's a good source for why not:
coursera.org/learn/science-of-meditation

Fuck prescription medication. Mental illnesses are predominantly a government construct to control the population.

Instead, focus on holistic medicine. Drugs "fix" symptoms by putting you out of homeostasis and releasing neurotransmitters that you don't have.

So, how do u meditate to increase concentration? I've done some googling and everyone wants me to pay them to teach me how to meditate. They mention something called "mindful meditation".

Isn't there an easy method that's free?

There's literally only one way to meditate: stop what you're doing, focus on your breathing. You can sit down, close your eyes, and make it a ritual if you like. "Mindfulness" in Jew-Age speak just means focusing on the present moment instead of the potential future.

I understand but I'd like a step-by-step process that is proven to work.

Quit internet browsing, don't use your PC if you don't need it for work/studying.

yeah?

Maybe a bit extreme. Don't pull a fucking Steve Jobs.

But yeah, I'd say a large majority of prescribed medication is just bullshit. The longer you are on it, too, the more money they make.