I think it depends on your philosophy a lot. For me, I'm an absurdist so for me, remembering the futility of it all helps a lot. Grounding myself in that nothingness forces me to make and develop my own purpose, not derive it from product or capital. What drives me is tied not to the money I make nor my ability to make it, rather it comes from myself and the change I want to see in the world. I looked to the stars when I was young longing to explore them, but due to our species's greed I know I never will. So I want to leave behind a world where future generations have the stability, resources, environment, and mental & physical health to look at the stars and actually visit them. It is difficult living under a system that is designed to grind you up for profit, but in holding true to yourself and what you value you can hold strong. It isn't about how many times you fall down, but how many times you get up.

ETA: I also highly recommend philosophy and introspection if you don't already practice or read about those subjects. In understanding yourself you will discover better ways to understand others, and vice versa. Humans are social creatures so hold onto those you love and trust and be open to new people. Do not fear loss or pain because then you will never live nor learn, but do not go recklessly into the night. Share the love, be empathetic and kind, and help people understand the truth and think for themselves. Doing those will hold you close to the ground and give you the roots you need to stand tall against the oppression.