What's the best thing to do?

I recently just started to talk to an old friend again and I'm starting to remember why I quit being friends with her.

We are two totally different people with different backgrounds and everything our likes, dislikes, thoughts, opinions everything Is just different

We clash a lot on everything when we talk. Its like if I talk bout doing a certain for my children she has something negative to say always. Shes always right on everything and I'm wrong.

I kinda want to end our Friendship because I see nothing there to be honest, but I'm not a mean or rude person. All I can do is ignore her when she wants to talk...