Every loss must be grieved. You can't deal with pain and disappointment effectively by acting like the "thing" didn't happen. You can't dwell there either. Here's a technique that I use to get past discouragement...I plan ahead for it. Let me explain:
One technique that I’ve used to help me manage disappointment is to set aside time for it in advance. I might remind myself in the morning that something disappointing is going to happen on that day but I must keep moving. I must keep moving!
So, what I do is budget myself a set amount of time...