One thing that helped me is not to care so much about my employer's goals. It's almost heretical. But once you embrace this mindset, it does wonders. Or at least, it has for me so far. I think a lot of us want to be proud of the work we do, and we feel that if we slack off, then we shouldn't be proud. But it's the other way around. I think the slackers have it right. You're probably not going to get rich from working…
If you are really feeling as you do, I think it's time to reassess your employment and potentially your life.
For instance, I think many startups are different to this, and not only because they are small. More meaning: the genuine opportunity to enact change, I think is the biggest differentiator, alongside better incentives and stock options that in some cases lead to life-changing financial outcomes. There is always risk with this, and it's a higher risk than a larger company, but that's just the mechanics of life, economics, and society.
I work incredibly long hours, so i'm always 'busy', but for the most part I love what I do, like a passion project. This is because I'm transfixed by cause and effect. It's an amazing thing that I don't think our brains are wired to appreciate by default. It takes discovering this and then confirming it, illustrating that just one person can have disproportionate impact in the world. It seems the vast majority of us limit ourselves or feel a sense of imposter syndrome in our own skin.
The more one realises this and manages to instrument some change, the more positive reinforcement one gets, until one can look back at varying chunks of time in one's life to see the impact that was made. This gives you strong sense of meaning to your life, motivating you to fill your time with high impact activities that have the capacity to genuinely change people's lives, alongside your own. This could includes making time for your family and so on: because in many cases this is an important high impact activity.
After realising this and doing it, the feeling you get with a positive outcome, even if you're still in the middle of doing whatever it is, is better than any drug i've taken.
Steve Jobs did an interview in which he more eloquently expresses this ethos: https://www.youtube.com/watch?v=kYfNvmF0Bqw
I think a lot of entrepreneurs feel this, but it isn't just limited to starting companies. There are so many ways each of us can make an impact.