Coming up with analogies to life can be dramatic or cheesy, so forgive me…
I think many of the things we have to do in life are like books…e.g. obstacles, tasks, goals, pursuits, dreams. Some are ten pages long and can be completed with ease in a matter of minutes. Others are tomes of hundreds upon hundreds of pages. These are the ones which intimidate and repel.
But the size and density of a book says nothing about your ability to finish it…just the amount of time it will take you.
If you picked up Infinite Jest (981 pages), and read one page everyday, you would eventually finish it.
The only books which don’t get finished are the ones that sit on the shelf untouched. The same is true for your goals, dreams, pursuits, etc…