Idiom-(be down in the dumps/let it lie)
1. be down in the dumps
- be sad ; be in a mood
Eg. Stephen is down in the dumps because hi is going abroad and cannot see Sabrina anymore.
2. let it lie
- don’t change; keep it the same
A: Should I talk to my best friend about his annoying habit?
B:No, just let it lie. Friend is fragile.