"All time is given to you, it shall be asked of you how you have spent it." St. Anselm Watch, then, for "sin is lurking at your door; it's desire is for you---you must master it" (Genesis 4). Prayer is the holding of the heart in time (eternal time, God's time)when the soul is buffeted and even tormented and mauled by the beasts who want to drag you into space. How intoxicated we are with space---filling it up with stuff, things; conquering it, taming it.
You are to be concerned with time. Embracing it. Loving it. But the beasts will draw you out of time and into space, space that's increasingly crowded by obligations, demands, and tasks that will always keep you living from a sense of deficit, scarcity. You will be led to believe you don't have enough time to fill up this space. But you have all the time in the world. You have an abundance of time. Time cannot really be spent, it is eternal.
Anselm, I know what you're getting at, but don't talk about spending time.
We get to dance with time, make love to time. Prayer is this dance, the marriage bed of God.