AOC has Instagrammed yet again, taking questions as she rides an Amtrak train from NYC to DC. She seems to like window seats, or at least she only Instagrams from a train when she has a window seat. I also like window seats.
As to big money in politics, that's from what's necessary to campaign: raising lots of money. That's from lack of public financing for campaigns. Also, politicians in DC can become detached from their constituents and the general public, and AOC, like many others, likes to return to her home district on a regular basis.
How to express one's anger at a senator in a red state? "Protest, run for office, or support someone running for office!"
As to negative emotions, she prefers to recognize that she has them. But she says that she's sometimes very hard on herself, but she has very supportive family and friends who are willing to correct her or offer different perspectives. Having a hobby is also helpful - plants, crocheting, meditation, video games, whatever works for you.
She does inside-outside politics, working on both the inside (Congress) and the outside (the broader world), and going outside helps her for some of the downsides of going inside, like mutual back-scratching politics.
As to people who don't think that voting will accomplish much, that's understandable in many cases. But take such people to some activism event, and they might get some different perspective.
As to having high emotional intelligence, it is from making oneself aware of one's own emotions and those of others.
In that interview in Copenhagen, she was asked if she'd do anything different. Not even the mistakes, because she has learned from them.
How Alexandria Ocasio-Cortez Plans to Wield Her Power - The Atlantic - back from Nov 2018
“Members who come in with big names tend to go in one of two directions,” observed a longtime senior House Democratic aide who spoke anonymously to discuss Ocasio-Cortez. “They can try to trade on that name and make issues all about themselves. Or they can put their head down and work.”
“Obviously,” the aide continued, “it’s far too soon to say which one she’ll be.” But the aide noted that, in private, Ocasio-Cortez had been respectful to members and constructive in internal party debates. Out of the three full meetings of the Democratic caucus that have taken place this week, Ocasio-Cortez has spoken up in just one of them, to advocate for the new climate committee. “She’s not out there saying, ‘Hey, look at me, look at me, look at me,’” the aide told me.
So far, AOC has gone the latter of those two routes, being a workhorse member rather than the show horse member that she might have seemed like from her celebrity. But she's been willing to advertise her proposals more broadly, proposals like the Green New Deal, anti-usury, and the Just Society.