How to cope with a physically taxing job that I hate?

I'm not use to this kind of thing because I previously had a desk job.

Obviously I'm looking for something else right now, I'm just trying to figure out how to cope with this until I do. I come back home everyday hating my life, feeling tired and like shit, and from having a sore back and neck (job requires a lot of heavy lifting boxes, unloading trucks, moving heavy/multiple objects, etc.)

Not to mention the people I work with are insufferable - they come in and complain and don't listen to authority.

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