You’ll be baffled by the type of things people would do to you. If you have a pure heart and good intentions toward others, you will often be shocked. And even as someone who’s barely semi-decent with others, you’re in for many (unpleasant) surprises.
We tend to assume, even while trying to be conscious and aware, that others are as considerate, or at least as logical, as we are. So when they hit us with an unexpected twist of events, something that broke the script you had assigned for how something was supposed to go, and even goes outside any other plausible possibilities, you might be left speechless. People can be indifferent, harsh, and cruel beyond anything we’ve already envisioned.
Maybe they’re in a complicated situation, maybe they had a rough day, maybe it’s just what they know so far, but, deep down, they’re still good or wish to be good. Yet, maybe not. At times, people are simply concerned with only themselves. It’s this type of people that make firm boundaries and strict rules a requirement in life. Law enforcement, even. They would not find it in themselves to genuinely be kind to others. They would only perform as such under the pressure of severe punishment or the allure of grand reward.
Someone who wants to take advantage of you isn’t so easily recognized. More likely than not, they have been doing this for much of their lives and have experience with what does and doesn’t work on and around others. So give yourself grace if you can’t immediately tell who’s who.
Nevertheless, you must inform and educate yourself on what constitutes as fair. Refine your understanding of it. Distinguish what you are really obligated to do and what you are due for in a given situation, so that nobody can shame or guilt you into complying with their twisted arrangements. Putting you in a spot where you lose and they win - disproportionately.
It starts with honoring yourself, your needs, your wants, and your limits. Getting it through your whole being that you matter, too. That you were not put in this world to please the worst types of people that exist here. That something doesn’t cease to be right and correct merely because those who are inconvenienced by it would disagree. And that you are (and should be) allowed to be a “nuisance” if it means standing up for yourself.
There may be plenty to factor in and ponder, so arriving at the proper answer(s) within the given circumstances can be difficult, but it is something that cannot be left to people you cannot trust, who do not have your best interests at heart. Ideally, you’d have someone with integrity and expertise to help you, but that doesn’t mean you shouldn’t get involved in the subject and grasp it to an extent as well.