Using the analogy of the rope ladder, I can point out the trouble that most people have with the creation of time in their mind.
Like olmate said, some tend to look back at all the rungs that you have had to let go. It is very easy to look back, and feel remorse about those rungs, and how sad it is that you will never return to those rungs.
When doing that, you forget about the one's you are holding right now.
When looking ahead more than the one you are supposed to hold next, it is very easy to think: "oh my God, look at all those rungs I still have to do, I am not even half where I want to be"
When doing that, you forget about the one's you are holding right now also.
This is what creating time in your mind means.
All you really have to deal with, right now, are the rungs you are holding, and the next one you are reaching out to.
A quick glance ahead is no problem, it can help you filter out the occasional damaged rung so you won't fall, and looking back isn't that much of a problem, if done for a moment, and with a feeling of fondness for the support the rungs have given you, and pride/happiness of what you have achieved.
But most importantly, keep your focus as much as you can on what you are experiencing right now, while your hands and feet move in unison to climb, from rung to rung. If you focus on your breath as well while doing that it is almost like Vipassana meditation.
Just think about it, why spend hours of energy every day thinking about rungs long gone, or yet to come when you could be enjoying the rungs you are holding right now
When climbing like that, a lot of people are startled at how easily they climbed increadible distances in a short time when they glance down again.
They just enjoyed the climb itself, the rythem of it, and never thought about distances or time, or how much their muscles hurt, how far they have yet to climb....