I think it might be useful to start by recognising one important thing. When you're desperate for something, but you can't have it, you tend to focus almost entirely on what you don't have. As you say, it overshadows everything else - you want the thing so much that it makes it hard to even notice what you do have.
Rather than trying to make yourself stop wanting it, might it work to start focusing on appreciating what you do have until you are ready for this next step?
I'm not sure how old you are, but it's very common for most women to start to feel pressure from their biological clock in their late 30s - it's a very natural emotional process.
This doesn't mean that you're going to have any problems with having children - in fact, most women at this stage will still be fertile and able to have children, so don't let that aspect worry you too much right now.