gcolma....FeelingGreat has given you some good suggestions. i think that it helps to make a list of the very worst parts of the relationship--that were harmful to you---and carrying that list with you at all times (in your pocket). I did that, at one time. Read the l ist every time you get the desire to call. You may have to read the list over and over and over, each day! The will keep you heart from overiding your head.
Don't be afraid to cry as much as you need to....and, you will probably need to.
The pain and longing can feel overwhelming, at times....like it will swallow you up. But, it won't. Just hang o n, and the "waves" of feeling will pass. Sort of like the waves of the ocean....they come in....and then, they go back out again.
It is important to have as much structure to your days as humanly possible.
Exercise is your friend, right now. the more ; the better.
Do little things to be good to yourself.....however simple.
Who do you have for (positive) support, right now?
Contact with other caring and uplifting people is very important.
You are right, these feelings will decrease and fade over time. The first few days and weeks are the hardest....as we all can attest!
Think of it as the short-term pain for the long-term gain!!!!!!!!
dandylion