I haven't done anything major but I try in little ways!
I have a degree in science and although I don't work in the field I talk about it when jobs come up when talking to a younger girl and let them know that science is an option for them.
In my work I'm taking on more of a management role and while I'm nice, I don't make any apologies for being bossy
I try to never put down another woman for her choices in life. Working 70 hr weeks to get as much money as possible? Good for her, not for me! Stay at home mum? Got for her, not for me!
I talk pretty openly to anyone who asks about being on the fence about having kids and hopefully making it more emphatically known that not having kids is also an option.
To anyone that asks I'm quite open about the fact in my relationship with my boyfriend, he's the romantic one and the emotional one. When we get our own flat I know he's the one that's going to have been mentally planning his decor for years and I'm just going to go with the flow. Just really letting people see that you don't always have to follow traditional male/female patterns in the relationship if that's not what works best for you.
So really not much - but for me, it's about letting people know and understand the wealth of options available to them and being accepting of their decision.