Consistency equals progression
For me, pull ups are the epitome of consistency. Progression, being able to practice something consistently to become better. For me, pull ups are hard. But its something that I want to be able to do. When you work o them continually, I can do more at one time. Starting then back up is definitely harder to accomplish more than a couple.
With anything in your life, the results aren't instant. You have to pay your dues and put in the work.