Self Discipline, time Management? Great! But what if you have a family? What does it take to cut out the time for you and you alone?
They need you, you need them. Working alone means alone, no-one interfering.
It’s a discipline inside the discipline, to stay easy and smooth: your habit becomes their habit. And in exchange, at times their habit become yours.
You have to learn to switch off reacting to every and each single input, question, comment. As if you were not there: focus on your task. If they don’t believe it, make it clear. Shut off, it’s the only possible pathway to work alone.