Being more happier by showing your gratitude :)

I really love this experiment. It warms my heart. Showing your gratitude can make you happier.
I should try but I am afraid that my parents will be more worried about me. I am not quite affectionate and to do so it is not easy and seems so strange for them.  I can imagine their reaction and what they are going say like "Are you okay? or What have you done? or Are you in a big trouble?

Anyway I will try to do one day. It is very nice to tell the persons you love the most how much they mean to you.