How do I cope when my job is mostly paperwork and liability?

You are good at something rare: writing things down so carefully they hold up when everything is on the line. That skill protects people. It is easy to forget that when the forms pile up and every word feels like it could be used against you. The weariness you feel is real, and it comes from carrying that caution all day. Try to separate the two things you are feeling. One is boredom with the paperwork. The other is the quiet weight of liability, of knowing a mistake could cost someone. The first you can manage with routine. The second is heavier, and it deserves to be named rather than swallowed. One small thing. At the end of the day, close the file and mark the work as finished in your own mind. You have done your part. The documentation will do its job without you holding it all night. Let the day end when the day ends.