Are you a regular 'thanker'?

Let say,that your co-worker always bring you a cup of coffee at work,you know that you pay him for that and that is part of his job. Will you say a “thank you” for him each time he brings you a cup of coffee? Well,that is just an example.

Now this is about yourself,did you always thank other people who contribute something to you? Did you say “thank you” only if you feel grateful toward other people’s contribution?

Anyway,thank you for spending your time writing your responses.