I work from home, and I also work a shitload of hours a week, often including significant time over weekends. My normal day is comprised of two modes - actually getting shit done, and talking to people (both internally and externally). When I'm in "get shit done mode", I turn off all distractions (email, phone, etc) throw on headphones, set a timer for an hour, and 100% concentrate on the most important shit that needs to get done. Once that timer is up, I take a short break, and those are the gaps I post here in. Repeat. Or, if I'm on a call where I'm an inactive participant I'll mess around here, on Reddit, etc.
All that said, the most important thing for my employer is that I get shit done and produce results. They don't care where or when I do it, although my normal work week is 60+ hrs...but that's mostly self imposed.
Tldr imagine being a responsible adult that can manage their own time, some of which might include posting here.