But doesn't it also feel bad knowing you put 100% in something and still failed? If you're really passionate about something, sometimes the toughest decision you can make is giving up on it.
On the other hand, there are those people who were told all their life that they were special, those that could succeed even without trying and never learned how to put in 100%. Then they finally get surpassed by people who actually try. Despite their passion, they lack the determination to work through the trials that actually require time and dedication so they give up, but never really let go because they know they didn't put in 100%.