[midoridensha]

>The trick is to stop caring so damn much.

This is the key right here. Work is just something you do to make money to live and enjoy life. There's other jobs you can go look for if the current one becomes too much of a drag. The company isn't yours, so stop acting like you're an "owner"; you're not, you're just a hired gun. Just do well enough to get some decent reviews, professional contacts, and a pathway to other jobs to ensure your career has a good future, and don't stress out about anything.