I am currently reading Ruthless Trust by Brennan. This morning as I was reading through chapter 11 "The Geography of Nowhere" this thought was presented that represents one of my greatest struggles. Maybe you can relate and hope this will also encourage you to read this book.
"Now/here spells nowhere. To be fully present to whoever or whatever is immediately before us is to pitch a tent in the wilderness of Nowhere. It is an act of radical trust -- trust that God can be encountered at no other time and in in no other place than the present moment. Being fully present in the now is perhaps the premiere skill of the spiritual life.
More often than not, I do not hear the music of what is happening now because my mind ricochets between the past and the future." p. 150