To take a chill pill

To relax, to take it easy.- décompresser, se relaxer, prendre du recul

The best time to relax is when you don't have time for it!

• She was getting so stressed about what her boss said to her that I told her to just take a chill pill – everything would be fine.
• My wife's working so hard, she needs to take a chill pill, otherwise she'll make herself ill.

Examples from the BBC "The English we speak"

Pep talk

a talk during which someone encourages you to do something better or to work harder.- discours de motivation, paroles d'encouragement

• We got a pep talk from our coach.
• The manager gave the team a pep talk at half time.