Taking regular intervals for 15-20 minutes is extremely beneficial when spending all day staring at the computer screen.
Understanding the cause of your stress can really help you.
Please don’t compare yourself to others. Comparing yourself has never been a good option, instead, it causes unnecessary pressure.
Doing all the tasks in one go is sometimes impossible and overwhelming. You can just break down your tasks into 2-3 tasks per day, or as per the situation.