Some people enter relationships with the hope that someday they’ll be happy with the person they’ve chosen because their partner will change to become more of who they want them to be. These “promising” dreams of future happiness almost always turn out to be nightmares.
People do change, but only if they themselves are ready to do so, and often more easily with the support of someone who already accepts them. If, at the outset of our coming together, we are already satisfied with each other, we have the best chance that our relationship can become even better.
Rather than trying to change one another, we need to spend enough time together to get to know one another as well as we can.
If you want to work on improving someone, try working on yourself.