I don't think anyone knows what makes lucid dreaming easier for some people than others. So I'm afraid I can't help you with that, and I fear that no one else can, either.

It's not weird to be able to control light in dreams, it's not true that's impossible. Same with reading time on digital watches. Pretty much the only limit there is is your imagination, but some things are easier to control than others.

I hope that helps, and welcome to DV!