Should or Must ?
Your choice!
Should
Exemple : ‘’I think you should go home and have a rest.’’
People are often unclear regarding the difference between the words "should" and "must." They have similar uses but different nuances. "Should" has three main uses; giving advice, making a prediction and talking about what we believe is the right thing to do.
Must
Exemple : ‘’You must not discuss this with anyone else!’’
"Must" also has three main uses; talking about something which is compulsory, talking about something which is extremely important and making a strong recommendation.