Your thread is ringing so many bells with me now, Aisie, this may turn out to be a bit a ramble ...
Well done on the lightbulb flash about your job! I, too, have always been fantastic at making things happen for other people. In fact, I was often told I should be an events organiser. I worked in sales & advertising. My real unique strength was coming up with ideas and solutions, however I was very comfortable with letting others believe the idea was theirs, then guiding the project to successful completion. I launched a lot of glittering careers: some of them, the very career I wanted
I can't give you a happy ending to that particular story, as I landed up in a position that exploited me to the point of complete mental & physical collapse. Bastards. I'll try to pass on a few of the things I'd begun to learn, though:-
Say "I want", "I can't accept", "I need". If you're a bit like me, you'll be using the passive mood; asking instead of telling; saying "we" or "they" when it's really your responsibility/decision; referring decisions to your boss whilst actually making the decision yourself. Get in the habit of taking a tiny pause before you reply. Replace that third person with YOURSELF. It changes the way people react to you.
When telling people what you want, need or hope for - start at the bottom. This is a lesson from presentation training, but it was a hell of a long time before I thought of applying it to my own needs! Instead of assuming your listener's already on the same page as you, begin with a couple of sentences to state where you're coming from.
Request confirmation that you've been properly heard. "Does that make sense to you?" "Are you clear about such-and-such?" "What steps are you taking towards XYZ?"
Request clarification about anything that sems ambiguous. The simple question "What do you mean when you say ZYX?" can resolve a world of pain.
Bear in mind that most sane people do all the above without thinking! It can prove interesting to start noticing who speaks in waves of inference (code), compared to those who accurately say what they mean
Have a quick look at a page on Transactional Analysis. Aim to stay in Adult mode, regardless of others' game roles. TA doesn't say you have to be Adult all the time, incidentally, but you do need to aim for it while you're getting the hang of things.
I bet you anything your H swerves from Child to Parent all the time, with never a hint of Adult!
Don't worry too much about your friends. One of the benefits to working on your self-love is that the wheat & chaff start separating themselves out, sometimes with surprising results