Beautiful that your life is going so wonderfully! It is frightening to some when things are going tooooo well. But fear not, literally!
All you have to do is keep doing whatever you're doing to make things work. You are clearly invested in your relationships with friends, co-workers, and loved ones, so don't stop actively engaging everyone.
As for screwing it up. Expect something to go wrong, it happens. But know that you can get things back together as you already possess the tools. In other words, you're doing it now and when necessary, you'll do it again. Now, expect that when something takes a downturn, you are more than capable of turning it up again.
For right now, enjoy the great success and you'll most likely keep attracting and creating more of it.
I'm happy for you! Check back in when you need more affirming or when you need help figuring out exactly what it is you're doing to create such a wonderful life. Or, we may need to investigate why you think you'll screw things up when they're going so well. Something to think about.