[turtleonturtle]

It sounds like your material life is great! It doesn't sound like you are missing anything out here. But maybe things need to be rearranged in your heart? I agree with other commenters that it seems you are living a life according to a pattern (as you say, ticking the middle class boxes) but maybe with unclear purpose.

It is very normal to not like your job. Most people do not. They do it as a means to feed their families, build security for their future, or to buy amazing toys. Search yourself for the reasons you have your job. If you don't have any good ones, why do it? But if you are doing it for a reason, it is no prison, but a means to your desires. Once you find those reasons, stay connected to them. Journal them, meditate on them, remember them every day. Nietzsche wrote "He who has a why to live for can bear almost any how." This is how you build gratitude, and gratitude is how you sustain optimism.

I highly recommend therapy as a way to explore yourself and cultivate purpose. It has changed my life in similar circumstances. Other tools I have found very useful are exercise, meditation, good nutrition, and building relationships with others.

The feelings you are have are common and everyone feels this way sometimes. You are not lost, keep going.