Just over 4 years for me and I was going to post almost exactly this.
I get up, work out or go for a run, take a shower/get dressed and then make breakfast. Shower and getting dressed like I'm going to work is a really important part. Also I have a rule that I never, ever eat at my desk unless it's absolutely necessary. I sit at the table and read or scroll on my phone.
I try and take a 10 minute break every hour or so to get up, maybe put away dishes, throw in some laundry, something to clear my head up a little bit. I like to make a list of things I want to get done in the morning and chip away at that here and there throughout the day.
When I'm done for the day, I'm done. I get up and go have a beer, take a walk, run to the store, anything to get me out for a bit.
I've found that to be a pretty successful way to manage both time and sanity. You don't want to get in a rut where all the sudden it's Thursday and you haven't showered or left your house.
I can't agree with this more. If you've got an idea and know some framework/language better than others and that can get you up and running quickly, use that. Refine later.
There are a lot of good answers about segregation, diligence and security in this thread. Knee jerk "windows!!!!" replies aren't good at all.