Yesterday was amazing but it's back to reality today.
I had a wonderful time yesterday but it's back to real life again from today.
I went on a trip yesterday and had a great time but it's back to reality today.
「昨日は最高でしたが、今日からはまた現実に戻る。」= Yesterday was amazing but it's back to reality today. / I had a wonderful time yesterday but it's back to real life again from today. / I went on a trip yesterday and had a great time but it's back to reality today.
ボキャブラリー
amazing/wonderful/great = 素晴らしい、最高
yesterday = 昨日
time = 時間
but = だけど
back to reality/real life = 現実に戻る
went on a trip = 旅行した
today = 今日