Interests and personalities change over time regardless. It's impossible to 100% separate between purely chemical effects, changes from being more comfortable and happier/dysphoria reduction, and changes that just took course over the place of time, all that stuff is interconnected. Bottom line is, HRT will not morph you into a different person all by itself, and the amounts of T you'll be taking are nowhere near the steroid abuse levels needed for "roid rage".
Something to bear in mind that I don't see mentioned often enough. As people's perception of you changes, the exact same behaviors will be perceived differently. Personal experience example: I'm much calmer than pre-T and pre-top surgery (not being constantly miserable does wonders). No one at work knows my medical history ("stealth") so that doesn't factor in. The difference in response between one of my female coworkers taking a deep breath to maintain composure, and me taking a deep breath to maintain composure is marked. The former is often ignored completely, whereas the latter is often met with a concerned statement such as, "It's ok dude, calm down".