Take vacation. Even if it feels like it will hurt the team, the real thing hurting them (and you) is that there isn't a system of trust between everyone. Take a week off, when you come back, figure out what people were blocked on, what broke that only you could fix, etc. and then work on improving those single points of failure. Driving yourself towards burnout is not doing yourself or your team any favors.
Try to remember: If you take time off and the business/team/project suffers, it's not your fault, it's your company's fault for failing to build in a staffing safety margin and failing to plan for the 100% expected event of people using their vacation time.
Why is it important to always be productive? What bad things would occur if you were less productive?
This kind of thing invades my decision making daily. I "blame" the high-demand for excellence at the tech firms I've worked at, and a personal obsession with self-help. It's whittled down my capacity for fun.
The only thing I've found help is to invest in something else I value highly - a hobby, friendship, family time. At the end of the day TV and movies (while enjoyable) aren't all that important compared to the obligation you feel to co-workers.
If nothing else, you will someday retire!
Conversely, if I don't have at least 4 days off in a row I don't know how to just relax and not try to do work.
I don't enjoy watching movies or TV anymore cause all I can think about is the fact that I'm not being productive.
I haven't gone to the movies since 2019 (since COVID) and I've been wanting to go.
But a part of my brain says that I can't spare the 3+ hours that it takes to go to the theatre. That it would be unproductive.
I don't know how to force myself to relax.
But other than I'm mostly good. I'm relatively healthy and am happy to have work and income at a time when people are struggling to get by.
So I honestly have it better than a LLLOT of people. I try not to take my blessings for granted.