@adiz @bot
sorry, rambling a bit here, because this intrigues me.
that's perfectly normal, you'll get used to any situation with enough time. It's what made humans so successful on this planet, we're able to adapt to anything. But our standards adapt with our situation.
Don't focus on chasing happiness, it will always be faster than you. Assess what you've got and make the best of it.
Happiness will come to you when you least think about it and are just doing what you love.
Money and success don't seem to bring you happiness, but they're great tools to realize yourself in a way few people can. Just buying a house is a lifelong dream for some, it's just another step for you: That doesn't mean you're a PoS though, even if you're not content with your situation. Don't force yourself to be happy & grateful, these forced feelings will come to stab you in the back whenever you're feeling down again. Instead identify what exactly is causing them, find the root so to say, and work on that. "Leaving everything behind" is usually the symptom of a much deeper rooted problem.
I wouldn't necessarily throw away this feeling of frustration entirely. Turn it into motivation to reach your goals, whatever they may be. Lust for adventure may be the very thing that enables your kids to have a great childhood if you take them adventuring with you!
Try to remind yourself why you chose this life over your old one. Even if you feel now that you were happier back then, there had to be a reason for you to leave.