Avoid the productivity trap - and the stress - by developing a "have done list" for yourself each day. We only have finite time in the day (and life) to accomplish what we need to get done for work and still enjoy our personal lives. The have done list is a daily reminder of your accomplishments - and a pat on the back to yourself.
Authors Oliver Burkeman and David Robson argue that this "practice helps you to reframe your workload so that you feel a greater sense of accomplishment, rather than simply stressing about all the things [on your 'to do' list] that you have yet to finish."