Thank you Osamenor, your post and responses were very insightful.
My second question was not meant in an obsession way but in a more actively defending myself way when the war which I forecasted to happen has started.
That you're forecasting such a war is evidence that you are obsessed. That every single one of your posts since you joined this forum has been some variation of you bashing Mr. Scorpio and fixating on wealth is evidence that you are obsessed. If you weren't obsessed, you would find other things to post about. Evil boss, evil dad, and your desire to strike it rich would be maybe 10% of your posts at most, if you talked about them at all.
A person who isn't obsessed with his ex boss would, upon leaving for a new job, breathe a sigh of relief and hardly ever think of the former boss again. If ex boss was really horrible, maybe even a non-obsessed person would have an occasional nightmare about him, but he wouldn't be occupying the bulk of your waking thoughts.
What in my chart points to the fact that I could do well with standing up for myself though?
In your chart, Mars. It's your most elevated planet and your oriental planet (the last one that rises before the sun does), which gives it a lot of strength, or, as I prefer to think of it, very strong expression. In your tenth house, so angular, which means it's readily accessible to you. And it has some good aspects: sextile to your sun, applying trine to your moon. A planet that aspects both the sun and moon is like the king's advisor mentioned a while back: highly influential because it talks to those in charge all the time. Its sign placement is also nice: Gemini Mars isn't in domicile, but isn't in detriment or fall either, it can express itself well.
A Gemini Mars is especially good at fighting with words. That's the person who can castrate a man with their tongue. May be very impulsive, too, especially if it has nothing but easy aspects.
Outside your chart, your actions also show that you take care of yourself. When you found your job unbearable, you found a new one and quit. That's standing up for yourself. Maybe you didn't confront the horrible boss directly, but you didn't just sit there and take it, which is what counts. You left home and got away from the abusive father, even though he tried to stop you. That took the ability to stand up for yourself. Standing up for yourself doesn't always mean direct confrontation.
But then, you worded the question, "Basically, if angered enough does it say that I have the potential to make others regret trying to ruin me?" To that, I would say, not so much, at least not in the way you apparently think. Not because of your Mars, but because of your Pluto.
To defend yourself, if someone really is trying to ruin you, you don't necessarily have to make them regret it, you just have to make them stop. Just like physical self defense: any good self defense instructor will tell you to use only enough force to get out of the situation. Don't stick around to beat up the bad guy who attacked you if you can get away from him using less force. That would just give you less chance of getting away for good and more chance of getting hurt.
Wanting to make others regret what they do is an obsessive Pluto-driven thought. Pluto is power. Pluto is also where you give your power away. If you can escape someone who's trying to ruin you, but then your first thought is to go back and make them regret it, and you spend hours and days and weeks trying to figure out how, you are giving your power away. When you give your power away, that makes you weak. And when you are weak, any effort you make to get revenge will just backfire on you. You'll come out of it feeling even more powerless, even more like an underdog, and looking very foolish, to say the least, in the eyes of anyone who saw what you did.