something i was very excited about is cancelled and now i can’t get out of bed

i’ve had a very hard school year and a thousand exams, i was looking forward to this summer break which is also my last summer break so much, i had plans to go to my sister’s who lives in the capital, and also meet my best friend there and i was so excited bc i just wanted to get out of this city for a while, i only have 2 friends here and i feel like i just need a break to see my favorite people again, but my sister has cancelled the trip and now i wake up super sad everyday and can’t enjoy anything at all, thinking how fun it would be if i were there rn, please help me get out of it i’m wasting my last summer crying everyday