Your job change, you should. 🙂

Joke aside, depends what is the issue here:

1. Are you unsatisfied with your job or
2. You enjoy/value your free so much.

As others have mentioned, find something to look forward to. If you’re miserable at your job, see what you can do to change that. Any small wins you can look forward to?

If you’re in a position “do I really need to do this for the next 30-40 years”, that’s a more difficult thing to resolve. We’ve set up a system for ourselves where that is the only possibility of surviving in this world. To change that you’d need to move somewhere to the highlands of Scotland or a tropical island somewhere and live completely off the grid. Unfortunately, though, that life is not easy.

Your best bet is to be born rich. Other than that, friends help. Having a support net and something to do that brings you joy makes this a tiny bit more bearable. Go read books. Go to the park. Sign up for dancing lessons or martial arts. Learn a new language. Travel. World is so much more than what we see on TV.

Unfortunately, that’s a question only you can answer. But goes without saying for any job.

Ask yourself:

• Will you be able to sleep peacefully at night knowing what job you’re doing and who you’re doing it for?
• Are your morals stronger then job security you’re getting?
• Can you stay on the job and inact change from within?
• Can you refuse certain tasks you don’t feel comfortable with?
• Can you steer / influence the work that you and/or the agency does?

Edit: typos.

In all seriousness, I think I’ve seen ‘Mx’ used in this context.

Usually though, you’d go with a generic greeting such as ‘Dear Sir or Madam’ or ‘To whom it may concern’.