Along with the capacity to deep work, I think consistency is the other meta-skill for the 21st century.
There is a prerequisite for consistency, and this is having a long-term strategy. You also need a fair amount of confidence that you are following the right path, as otherwise, your self-doubts will sabotage any efforts you make at being consistent.
So, the first thing is to pick one thing to be consistent at and be sure that this will lead to positive second and third-order outcomes.
Then you can try being consistent, and the best way to do this is to make it easy. Make the most ridiculously small step that you can make.
It will feel strange, especially if you are a grown adult. Is this what it has come to? Doing something that is so easy that it is almost pointless to do?
After all, what is one pushup going to achieve?
What is writing ten words going to achieve?
What is running on the spot for 30 seconds going to achieve?
The answer is: a huge amount.
You are starting a habit, a routine. This is the key thing in building consistency, not the initial precise output of your efforts. You’ll quickly build up more and more quantity and quality of anything that you are trying to achieve, as long as you stay consistent.