Anything that prevents you from paying full attention to whatever you are doing in life can be termed a distraction.
Distractions are real and happen in everyday life and activities. It can come through anybody or anything. Your family members and even some of your friends can be a source of distraction to your pursuits in life. The numerous social media available today could also pose a distraction to you if you allow it.
Distractions can stop you from reaching your goals in time or even stop you from reaching them at all.
It is of paramount importance and to your own advantage that you identify those things or people that are a source of distraction in your life and deal with them.