The following is an excerpt taken from Eckhart Tolle's book The Power of Now - A Guide to Spiritual Enlightenment. It discusses how being controlled by psychological time causes life to become laborious instead of joy and ease which comes with living in the Power of Now.
"To alert you that you have allowed yourself to be taken over by psychological time, you can use a simple criterion. Ask yourself: Is there joy, ease and lightness in what I am doing? If there isn't, then time is covering up the present moment, and life is perceived as a burden or a struggle.
If there is no joy, ease, or lightness in what you are doing, it does not necessarily mean that you need to change what you are doing. It may be sufficient to change the how. "How" is always more important than "what." See if you can give much more attention to the doing than to the result that you want to achieve through it. Give your fullest attention to whatever the moment presents. This implies that you also completely accept what is, because you cannot give your full attention to something and at the same time resist it.
As soon as you honor the present moment, all unhappiness and struggle dissolve, and life begins to flow with joy and ease. When you act out of present-moment awareness, whatever you do becomes imbued with a sense of quality, care, and love - even the most simple action."
To discover how you can use The Power of Now to overcome many of the daily struggles faced by mentally living in the past and in the future instead of Now (the present), click to learn more The Power of Now: A Guide to Spiritual Enlightenment.