Disappointment is no welcome change. It is defined as sadness or displeasure caused by the nonfulfillment of one's hope or expectations.
Life changes can't be avoided and they do not always bring joy. However, see it as an opportunity for growth. Don't resist the unfortunate circumstance, learn from it and move on.
Dwelling on the disappointment won't make it go away, it just prolongs the healing from the hurt it caused. Never forget that how we respond is totally under our control.
I recently wrote another post on change and how we should celebrate it, good or bad. Be flexible, practice gratitude and unpleasant changes will not interfere with good mental health.
I'm still experiencing grief and have long acknowledged that it will have lasting implications in my life. Changes in my life circumstances will also change those lasting implications positively if I let them and that is what I choose to do.
Learn from your life changes and disappointment!
Disappointments can be a positive thing.