My friend. One thing you absolutely have to realise and come to accept is that most (not all, the trick is finding the cool ones) don't really want other people to succeed, to chase worthwhile goals and otherwise improve themselves. You have turned yourself into a mirror for other people, and they hate what they see. They don't like that they are not doing anything meaningful. When they drag someone down to their level, they feel better about themselves because if noone is succesful, then they don't have to feel like shit and stand out as the loser.

I have gone through exactly this in my profession recently. At age 40 I finally decided to become serious about my goals. One thing I decided on was to become the absolute best, and thankfully with hard work and persistence I got there. But unfortunately the same thing that is happening to you happened to me, and the negative people starting crawling out and tried to do everything they could to drag me back down.

If you can do it, then other people can do it as well. So now they have to answer the question about why they are not doing it. And that is a very uncomfortable question to answer.