1. Keep up the good work! 2. That was a nice try. (say this after someone made a good effort but failed) 3. That's a real improvement. 4. You're on the right track. 5. You've almost got it. 6. You're doing great. 7. Don't give up! / Hang in there! (when someone is currently having difficulties) 8. You can do it! 9. Give it your best shot. (best shot = best try, best effort) 10. Nice job! / You did great! (after the person has done something good)