Quote: BUT I DID EXPECT THAT MY WIFE WOULD BE THE SAME PERSON AS THE ONE I MARRIED.
I think this is an unfortunate expectation of yours. Everyone changes over a course of a lifetime. That is a part of life.
I think you are going to waste an inordinate amount of your time waiting for your wife to change so that you can be happy. Because if you can get her to change, then you don't have to challenge your own fears, your own belief system, and do whatever it is you need to do to make yourself happy.
What if your wife is perfect just as she is? She may not be perfect FOR YOU, so then what? What if it isn't your wife that is holding you captive, but your own fears and your own belief system? What would your life be like if you faced your fears head on and no longer allowed them to dictate you? What would your life be like if you woke up one morning to discover that your belief system was no longer valid? How might your life be different?