Try to find meaning in setbacks that go beyond your particular circumstances. Don't be too quick to judge the outcome of what you're going through. Ultimately your response will determine what good will come from what has happened. Don't dwell on the past. Mistakes are to be learned from and not repeated.
Failure is often a stepping stone to greater success.
Stop blaming others. Who caused the problem isn't as important as how it is going to be solved. Many things happen that are unfair and unjust. Dwelling on the culpability of others prolongs your anger and bitterness. Give yourself permission to grieve your losses.