The light at the end of the tunnel is only the headlight of the oncoming train.

Commentary:
"In life, sometimes the light at the end of the tunnel turns out to be the headlight of an oncoming train ๐Ÿš‚๐Ÿ’ฅ. Talk about a plot twist! Remember, look both ways before crossing those metaphorical tracks! ๐Ÿ˜"