It is always nice to put a face with a name. Sometimes we need a tiny little reminder of what someone looks like because we don't see them very often.
Follow these steps to add/change the image associated with your Google account.
Open your email.
Click your image. It might just be a blue circle if you have not added something already.
Find an image you like.
Your amazing new image will appear. From now on everyone can put a name to a face!