It's hard to tell which factor helped my depression more: T or transition overall? The fact is, I'm doing much better with my depression. I also get Seasonal Affective Disorder. I had a few bad days last week, but this has been my most successful winter so far. In another two weeks or so, I'll be through it. I can hardly believe it. I'm managing my depression without mood stabilizers, and I'm not doing too badly. I still have progress yet to make--I become more sluggish and unfocused in the winter, and I think I can do better next time. I'll chip away at it every year.
When I was injecting every two weeks, I saw definite troughs in my mood. On weekly shots, I'm much more stable.
I went through a period during which I became extremely competitive and had to struggle with my aggression. It was weird. In discussions with my old buddy from grad school, I suddenly wanted to win any debate we were having. I curbed that pretty fast. I became a more aggressive driver, but I've toned that down. While we were still having sex, I became much more assertive with my ex. I don't think he liked that very much. In public, I'm much more likely to speak my mind, and nobody seems to think I'm being pushy. I think they see it as normal male behavior.
I do get a strong urge to punch people out sometimes, but I've never acted on it. For one thing, it would exacerbate my repetitive motion injury.

I'm still sort of revved up sometimes, but I have better control over it now. And a bunch of guys I know say that T calmed them down and smoothed them out, so I don't think you can know till you give it a try and maybe play around with dosage if you need to.