The Casey Neistat work ethic is breaking down what ever you want to be better at into a chunk that can be performed every day. And then doing it every day. No excuses. No ifs. No what ifs. Just do it. Every single day.
He famously started daily vlogging to put an impetus on himself to film something everyday.
The secret sauce is keeping the daily task at the boundaries of your current ability. That provides enough motivation to work on it and get better but at the same time not too easy or boring.
This won't be easy. Doing something hard deliberately requires discipline.