SUBREDDIT: r/relationships
TITLE: I [22 M] need deciding what to say to my ex [25 F]
POST: Long story short. My ex and I dated a few years ago for about a year and a half. We broke up about 3 years ago because I had trust issues and because she had a minor drinking problem.  

We've both dated other people since then but I always find myself thinking of her. Anytime I accomplish something new I want to tell her about it.  Over the years  we've been apart I really think I have matured a lot and my self esteem has increased. I've found some good supportive friends that have shown me how to love myself, like I couldn't before. Within the last year, I've started working out and lost some weight which has also increased my self esteem. The relationships I've had since her had taught be a lot about trust. I think that all these would make a much better boyfriend now than I was 3 years ago. I also know that she has worked on her drinking problem. Shortly after we broke up she stopped drinking for about 1.5 years. Now she only drinks in moderation, she no longer smokes. I know she focuses a lot  more of her efforts on school(grad school) rather than partying like she once did.  I know Reddit isn't a huge fan of trying to rekindle old relationships but I both think we have worked on our problems and are both better people now than we were back then.

I want to tell her that I miss her, that I've changed and I want to know if she feels at all similarly, or if she thinks its possible that she might someday. I just don't know how to phrase it correctly so I don't scare her off or give off the wrong idea.
TL;DR: 
I want to reconnect with my ex, I feel I've improved myself and matured. Want to know if my ex feels at all the same. Need advice on what specifically to say.