I've been learning React this month. I've been working through a tutorial, but all the time thinking "This is hard, I'm never going to be able to do it". It was earlier this week when I read something about your comfort zone that I realised why: I'm out of mine.
Once I understood why I was feeling this way I found learning React easier. I know I'm not comfortable, I'm learning. And one day, React will also be in my comfort zone, I just need to keep learning it until it gets there.