Have, etc. a lump in your throat
Definition 1 of 1
Pro Tip 1/3Emotional Overwhelm
Use the phrase when emotions are so strong they almost prevent you from speaking. 
Seeing her childhood home in ruins, she had a lump in her throat.
Pro Tip 2/3Not Literal
The 'lump' isn't physical, but a sensation caused by emotions like sadness or pride. 
During the national anthem, he had a lump in his throat.
Pro Tip 3/3Personal Stories
Often used when sharing personal, touching stories that evoke strong feelings. 
Recounting her journey to freedom, she had a lump in her throat.