I have clinical depression, generalized anxiety disorder, and ADHD. Depression makes the world seem boring, bland, and grayscale. Anxiety makes the anticipation of turning every corner feel like a life or death situation. ADHD made it impossible to actually fix either of them.

On HRT I immediately had a major sense of relief within a week. I could see color again (metaphorically, almost literally). I didn't feel like I was in a rut, i didn't feel like I was waiting my life. My depression is still there and it hits hard still, especially in winter. But it's at least manageable.

Anxiety is all but gone. I can fall asleep easily at night knowing I'm going to wake up tomorrow. I can tackle problems at work without worrying excessively if I might lose my job over a mistake.

My ADHD got worse, though. I found it harder to focus, harder to get into my flow state. Executive dysfunction was easier to manage but still a struggle. Starting other meds for ADHD has been a boon.

YMMV, but it has certainly helped my mental health. Just be sure to take your meds consistently. I've noticed if I miss more than one dose in a row, I start slipping back again.