This is probably one of the biggest challenges when working remotely: Many employees who work from home feel obligated to work harder and longer hours than their office counterparts. This can lead to a lot of over-time, weekend work, and lunch breaks spent in front of the computer. Oftentimes, remote workers even feel the need to leave their communication tools running at all times and respond to emails immediately, which leaves them being alert even when they should be unplugging and taking time off.
Understanding that working from home does not mean you are working less than anyone else is the first step to tackling this problem. Again, in a perfect world, you have an employer that looks out for you and encourages regular breaks and time offline. However, you need to take care of yourself as well and make sure you are not burning yourself out.
Reaching out to your supervisor or other colleagues to share your experience is a great way to start. Ask what is really expected of you in terms of response time and active communication, and explain your own boundaries and limitations. And sometimes, little things such as blocking a one-hour lunch break in your calendar can already have a big impact.