Oh Ronan, I am so sorry that you are feeling pain.
Please don't think I am being cruel when I say this, but it actually is a great change to learn to process disappointment and loss.
One of the things that has helped me when I lose someone I love (and I can be devastated) is knowing that the only reason I can feel great pain is because I felt great love.
These are twin emotions, and they let us know that we have a heart. Then we have to find our courage to get through the other side.