Good will hunting, even if it's cliche'd, helped me understand how personality can be a huge problem for oneself, whatever the talents, work and motivations.
There are many quotes that will make you wiser, but to me, the most important thing to remember about politics and society being mostly disorganized and unable to properly help individuals, is that society resembles a growing pool of microbes.
It's blooming with life with diversity, but it's not really aware of itself. To me people are aware of themselves, but society is not aware of itself. People are truly alone in their own life, society is not really there to really help them or make them connect with each other properly. This way, society is unable to really improve itself by improving its subjects. That's why I try to compare society as a live being, holding several cells.
This helped me contextualize myself in society, and give context to what society really is. Also important to never look down to anybody or anything, always be curious and not leave a thought with pessimism, always try to understand the compromises and origins of things. It's not an ode to optimism and positivism, but always be sure to confront your interests as a human in the void of the universe, and understand that even if it looks pointless, if it's a step forward, it's a good step.
I'm also very bad at expressing myself.