[greyman]

For the sake of adding more hours for work on personal projects, I can add two things that works for me:

1) It might not be necessary to sleep exactly 7 hours. I found out that if I sometimes sleep less, nothing tragic happens.

2) What also works is that I don't need to spend every evening with my wife. I don't mean it in a negative sense, we have a very good relationships, but in a lot of evenings, I just do my things on the computer, and she does her things, and it's totally ok.

[Spyou]

I've tried different sleeping times and 7 hours seems to the one that suit me the most. Obviously this is not an exact science and I guess that as long as you have between 6 to 8 hours sleep, it's ok.

Regarding my relationship, we've got a very close one, but obviously we do thing on our side in the evening. Sometime I'll reading or gaming and she'll doing something else. But we like to keep the "going to bed together" and "having breakfast together" as much as possible. It's just more quality time added to our relationship.