It is not just about giving up. It is also about Why and How. And When.
Unless there are no visible reasons to keep on trying, Giving up is not easy. Contrary to what people may say, admitting defeat while on a trail, however convincing the reasons for giving up, takes a good amount of courage. Stepping back when we are hot on a quest, and dropping everything including the principles we believe in, because of other priorities, other people, other events, can be quite unnerving.
At the end of a long trudge along a dark and non-existent path, when we find ourselves alone and weary with our target nowhere in sight, the original vision we were chasing that motivated us to get started on this journey appearing vague and blurry, it would seem that Giving Up is easier than the struggle forward. It would be, if the Original Urge was not strong enough, or one did not believe in it.
The attraction of one's quest is difficult to ignore, impossible to snap. Convincing oneself that it is time to let go could be heart-breaking. Very often, days after we have made the decision, we wake up in the morning, ready to continue what we were seeking, forgetting for an instant that we had decided not to go any further - that we had surrendered.
Imagine, one sunny morning you measure your life's efforts and tell yourself, That's it! I am drawing a line here. If my painstaking investments yield results, then probably I deserved them. If not, I never did. I am not going to exert myself any further. Instead, I will wait for glory to come to me.