I’m becoming more confident – but I’m now suffering a new problem

So basically I use to be extremely insecure like you wouldn’t believe growing up – I saw very little of myself, felt inferior to others, took a lot of shit, and thus have been constantly used and mistreated by others. I’ve only recently started feeling self-confident through a lot of ‘self-therapy’ if you will (I’m a psychology student and I’ve basically been using CBT on myself). I usually feel very prideful, full of hope, and driven nowadays – but I’ve noticed this has caused me to react EXTREMELY aggressively (almost violently) and totally unforgivingly towards people who disrespect me enough with no good reason. I can’t seem to just ignore such people – and I find it impossible to let go of a grudge (though I should note none of these dicks have apologised so far – so idk how I’d handle an apology yet). Is this really a healthy way to live? I should note that I always try to be in my best behaviour and I’m never out looking for trouble – it’s just that when trouble comes, I become a ticking timebomb for disaster, and I’ve already had multiple large outbursts even in public which created scenes.