I would quibble with a few others ...
Put your desk in the corner of the room, and eliminate all possible distractions, from phones to open windows.
In ideal world. When you have to write while your kid is playing a cricket game or taking swimming lessons or golf lessons, it's best to learn how to shut the world out rather than to try and eliminate the world.
So I agree with what he is saying, just differently.
Take your writing seriously.
This is one of the many things I've learned here on TNBW. And for me, it started with Sol's advice (on the old site, not sure it came over to the new one) - When you do a review, use the character's names, don't use he or she. This approach makes characters real. And from then on (for me at least) it started to get serious.
Finish your first draft in three months.
I agree, but again, differently. In an ideal world, where I'm a full-time writer, I can see this happening. In the real world, after a 10-hr work day, having kids with sports/birthday parties and other family commitments, I'd be happy with twelve months. I've long ago realised I'd be lucky if I can finish a 100,000 word novel (first draft and second revision) every two years. I don't think I'm special or the only one. Or that not meeting this target = failure. This also means that you need to put other systems in place to avoid it from "taking on an odd feel" ...
Stay married, be healthy, and live a good life.
See the previous point ... sometimes you need to compromise. And I'd rather compromise and take 12 months to write a first draft than compromise where my marriage and kids are concerned. In an ideal world, you can have it all. I'm glad if this works for him, but I'm not so sure it was entirely written with "part-time" writers in mind.