Everyone has let people down in some way others in the past.
People have let us down too, be it consciously or subconsciously.
Does it matter what happens? I reckon not. We move past disappointment as fast as time washes the past away.
But there is a kind of disappointment that doesn't go away as quickly: Disappointment in yourself.
The kind of disappointment where no one said it / hint it / even intended it, but the voice inside your head just doesn't want to let it go.
"I could have done better..."
"I should have held it on..."
"I oughta be the better person..."
Before you know it, it had already spiraled down into serious self-doubt.
"I will never be good enough"
"Who am I kidding? I'm useless"
"They deserve someone better"
When the negativity gets so overwhelming, what happens next?
Too tired of feeling so useless and sad, we escape, hide, run away.
We become resentful, vindictive, or apathetic.
Disappointment in others as with self is the same, an emotion. Yet, when it's on us, it's so much harsher because we paint our reality.
While emotion is a perception, one can't simply change it just by wearing a pair of rose-tinted glasses.
However, there are still few things we can do:
1) Awareness
Be aware of the emotion that you feeling (disappointment/sadness/anger) against yourself is constructive or destructive.
Some disappointment can make us reflect and strive to achieve better.
Some disappointment just revels at self-abuse.
Avoid the second type by practicing self-care. Don't let it fester and pull you down the dark abyss.
Cry, scream, talk to someone, write it down. Notice the language as you go along.
2) Accept your emotion
Accept the emotion. Let it come instead of trying to suppress it with logic. An overstretch rubberband will snap one day too. Let it come and just accept the whole of it, the bad and the ugly, with no judgment. Accept that whatever has happened had already happened.
The past doesn't define you. Your fear of the future doesn't define you unless you realize it (self-fulfilling prophecy).
You get to define who you want to be, starting from this moment, right here right now.
Who do you want to be?
Start with a thought, an awareness, a breath.
Breath in and take them in each moment by moment in your stride.
With acceptance, love, and grace.