Ask HN: How to stay focused when You're getting through a divorce

I know that's not tech question, but maybe here are some guys in the same situation.

Right now I am married for 10 years, we have two little boys (8 and 3 years old), build a house and I started my own business with app development and online marketing consulting 6 months ago.

Since february things at home are getting worse and I decided to move out for some time to calm things down. Honestly ... it's really hard to stay focused on projects when You're going through this. But I need to because I've increased costs (appartment & living costs for me).

Any advice from You guys?