Don't be afraid to let yourself feel pain. It's only pain and pain will pass.
Feel what you need to feel, when you need to feel it.
Cry it out. Scream. Grieve. Write something. Talk it out. Go for a walk. Pray.
But, don't wait until later. Don't bottle it up. Don't hold on to it.
Pain held inside and bottled up, almost always grows into bitterness and resentment. It looks like burned out and weary, contempt and shame. It leaks out in the forms of addictions and unhealthy behaviors.
Waiting to feel it will only make it worse. Waiting only makes the pain more painful.
Waiting to feel it will cost you. It will cost you your sanity, your happiness, your pocketbook, your relationships, maybe even your life.
Give yourself the space to feel.
They're just feelings. Don't be afraid to give them some space. Feel them. And move on.