Do something hard for the sole sake of the challenge! It will be uncomfortable, but embracing that discomfort and not the outcome that is the exact reason to do it.
Hard challenges open new learning opportunities. You’ll likely meet new people as you gather information related to execution of the task and maybe even join a group of people who have similar objectives. Undoubtedly, you’ll gain a skill and grow as a person. Most importantly, you’ll get outside of your comfort zone and learn how to succeed when things are tough.
And when you succeed, you will have earned a feeling of success but this is not the reason to do it initially. Preparation, living through the struggle and willing your way to succeed are the rewards for this venture!