Is it normal/healthy to develop this type of mindset? I am certainly feeling much better, but I am also scared of crashing back to where I was. I am developing more of an "oh well" attitude regarding wondering what she is thinking and what her next move will be. These are feelings that I haven't felt before and is all quite new to me. The main fear that I have now is if I am doing everything right.
Crashing happens and when you do, you pick yourself up, don't feel bad for yourself and let go of wallowing in self-pity.
You don't have to worry about doing everything right, just worry about making you happy and that means focusing on you more and less on her.