1. Don't get to that point. Don't back away from the keyboard when the clock strikes 5; move away from the keyboard when you're at a natural stopping point. If that point is 3:30, and you know that the next block of work you'd like to do is going to take you three hours, don't start it. Commit, push, and consider yourself done writing code for the day.
2. I keep a journal of what I do throughout the day. This probably is at a higher level than what you're looking for, but occasionally I'll post links to github with the file and line number where I left off.
3. Sometimes, I don't commit everything; hopping back on in the morning, a `git diff` shows me what I'm working on. This obviously doesn't work if you've changed a thousand lines, but that goes back to point 1 - have reasonable stopping points.
4. Break tests. If you know you need to finish something, write a test for it that doesn't work.
It should be added that just because you're "done" at 3:30, there's probably plenty to do. I spend the last bit of my day doing other things that are important such as checking email, responding to pings, writing documentation, updating tests, catching up with coworkers, etc.
1. Don't get to that point. Don't back away from the keyboard when the clock strikes 5; move away from the keyboard when you're at a natural stopping point. If that point is 3:30, and you know that the next block of work you'd like to do is going to take you three hours, don't start it. Commit, push, and consider yourself done writing code for the day.
2. I keep a journal of what I do throughout the day. This probably is at a higher level than what you're looking for, but occasionally I'll post links to github with the file and line number where I left off.
3. Sometimes, I don't commit everything; hopping back on in the morning, a `git diff` shows me what I'm working on. This obviously doesn't work if you've changed a thousand lines, but that goes back to point 1 - have reasonable stopping points.
4. Break tests. If you know you need to finish something, write a test for it that doesn't work.