Watching or Sleeping

As I was reading in Mark 13 the end of the chapter hit me. The chapter covers a discussion with Jesus and His disciples. They have asked Him when a great destruction of the city will occur that Jesus had just mentioned. (Mark 13:2 "Do you see all these great buildings?" replied Jesus. "Not one stone here will be left on another; every one will be thrown down." )
At the end of His somewhat cryptic answer, Jesus ends with the admonition to be watchful and not be caught sleeping. This is an almost constant topic of concern for me. I am so easily distracted. I am definitely awake physically but spiritually? I have to be conscious of my state of mind and not get caught up in the busyness of life or useless distractions that keep my mind preoccupied and not focusing on Jesus or godly things. I must be watchful of the leadings of the Holy Spirit, so I don't miss an opportunity to be a part of Christ's plan and activities. For me it means not getting caught up in meaningless distractions that prevent me from hearing and following.
It reminds me of the book Hinds' Feet on High Places. The Shepherd had told Much-Afraid that He would come for her and sing an invitation to her as He passed by her cottage. He could not give her the exact time He would come, she just had to be ready and listening so she could go to the High Places they had talked about.
Christ wants me to join Him in what He chooses to invite me to do but I must be ready, watching and listening or I might miss Him when He calls.
Oh Lord help me to be watchful and ready.