When painful problems are in your life, you have options:

1. Solve the problem
2. Change how you feel
3. Accept the problem
4. Stay miserable

I'll share with you one of the few useful concepts I learned about in rehab. It's called radical acceptance. Here are the 10 steps out of your misery:

1. Observe that you are questioning or fighting reality ("It shouldn't be this way")

2. Remind yourself that the unpleasant reality is just as it is and cannot be changed ("This is what happened")

3. Remind yourself that there are causes for the reality ("This is how things happened")

4. Practice accepting with your whole self - accepting self talk, relaxation techniques, mindfulness, imagery

5. List all of the behaviors you would engage in if you did accept the facts and then engage in those behaviors as if you did accept the facts

6. Imagine, in your mind's eye, believing what you do not want to accept and rehearse in your mind what you would do if you accepted what seems unacceptable.

7. Attend to body sensations as you think about what you need to accept

8. Allow disappointment, sadness or grief to arise within you

9. Acknowledge that life can be worth living even when there is pain

10. Make a list of pros and cons if you find yourself resisting practicing acceptance.

This is part of DBT, dialectical behavior therapy. I suggest you look into it.