You should + (verb)

Here you are suggesting an obligation or duty that needs to take place either now or in the near future.

Here are some examples:

"You should go to bed."
"You should do your homework before going outside."
"You should replace you headlights on your car."
"You should request a raise at work."
"You should stop smoking."
"You should smile more."
"You should slow down when driving in a neighborhood."
"You should talk to him about it."
"You should train your dog."
"You should trust what they say."