Who hasn't felt like this with plans that were made? Getting all gussied up is part of the fun of making special plans and then when it's cancelled, we need a comforter, like ice cream.
Proverbs 19;21 ''Many are the plans in a person’s heart, but it is the Lord’s purpose that prevails.''
Our plans may be redirected for our own good and without us knowing why. We must trust in a bigger plan than what we can see or understand fully.
Yes, we can feel let down or frustrated with disappointment when things don't go as we think they ought to. We must remember that when God closes one door, then He opens another. My personal plan of being a pharmacist was rerouted due to geographical problems, but in the end my journey led me to the perfect job in the lab. We must not give up but persevere through the changes life leads us through.