Most of us on here are carrying bagage of some sort Charlotte, there is no reason to be envious of anyone here. We are all on the same path and we all have our insecurities too, some of us are further down that road than others. I realise and I think you realise that the envy is not rational but I hope you can get on top of it.
I will admit to feeling a bit of jealousy at times when I see people further on in their transition or those who have completed their journey and are living their best life. But I have belief that one day I will get there too.
7 years old is mighty young for sexual thoughts, crikey, thats a lot to process at that age.
I can't begin to understand what your childhood abuse was like or how it will have affected you. I am so sorry you have had to endure that treatment.