Through our senses we connect with the world around us and within. What varies form one person to the next is the degree to which we notice. With attention we can open up to a world of experiences, if we just let ourselves do so.
To pay attention is to consciously take our focus into our environment and experience through each sense. An initial stepping point is to be conscious about our attention. The next is to actually then process what comes up.
There are many levels of paying attention. There is a superficial or external level where we notice what is easily observable. For example our physical appearance may be out of kilter. We notice disorder or uncomfortable states and then try to remedy. Something as simple as adjusting your clothing or styling your hair can be the answer. Not big impact events. Not really deep and meaningful.