It's all about choice.

If you want to "feel" happy, work less, but you should able to accept less payment too.

If you want to "be" happy, work as hard as possible, it will pay off.

I never heard rich people don't have tight schedule, their schedule are tight as hell, they work harder than most people who feel their work are hard. You see them go to gym for 2 hours, it's not they're happy to train their body, but it's to make them in shape and increase opportunity to get higher income.

You see them playing soccer, golf etc, it's not they're enjoy it, they do it to increase their connections.

Personally I think working remotely is bad, you decrease your chance to meet new people which could increase your opportunity to get better jobs.