Being self-disciplined implies great organization, having clear goals, applying logic and valuing time.
Not looking for excuses not to do what we plan, because we would be sabotaging ourselves.
Eliminating distractions, more than necessary, is the way we can make optimal use of our time.
And yes, we cannot pretend that we will get everything from one day to the next, everything has its process.
It's a good point @franyeligonzalez