How do you hold yourself accountable, when someone else can't? I don't believe that it's about holding yourself accountable. I believe it's about being accountable.
Accountability is keeping your commitments to people. You're responsible for things, but you're accountable to people. If you're working from home or working on a side gig, well, you have things you need to get done. Those are your responsibilities. Accountability, keeping commitments to people, is based on a series of relational commitments, not tactical commitments.
Accountability isn't a way of doing, it's a way of thinking. It's how you think about people. It's how you think about those commitments. The unspoken commitments that tie you closely to them.