I'm left handed and learned how to do some skills right handed like cut with scissors and use a mouse, among others things, to make life an little easier in our right handed world.
I'm left handed too as in I first learned to write with my left hand. Having said that there is things I've only ever done with my right hand like playing sports, eating crisps, cutting with scissors and my phone is always in my right hand to, these are things I can't do with my left hand. But eating with a fork or spoon, brushing my teeth and colouring I can only do with my left hand. I'm strange.