Affiliate Marketing Secrets

As I rebuild my hope and my life in general..work on creating a niche for myself, I find myself asking when considering going out on my own in a particular career direction and/or creative endeavor that is not a typical career, etc ….?what is the point when> A) so many previous attempts/directions have fall through already or didn’t work out due to various reasons, B) I have real health limits that make it hard to just push on through like a bull and most of all…>C) there are so many others doing similar pursuits that I ask… ‘is there even a place or need for what I have to offer??…should I even bother putting it out there??
I vex quite a lot over this and struggle to continue summoning up the bravery or confidence to push past my own worries or the illusory limits of the market. Moreover I struggle with gaining the clarity to keep on pursuing something because I feel like, ‘well It’s been done or is being done by so many…so why bother?’
It’s very discouraging….I know what I would tell someone else…but I’m me and cannot seem to see past my own worries or the world. A lot of that youthful, fiercely independent and outside the box bold a$$ thinking and living was kicked out of me when I got sick and things fell apart and now as I rebuild I am doing so in a different, new fashion that is not quite as bold as I used to be. So I’m literally having to figure this out now, 10 years older and life circumstances GREATLY changed as a result of it all…etc….anywho…
Curious what others think about about pursuing something that is already done by many others, against all odds and still being positive about it?
Thanks! 🙂

Before I begin I would like to point out that I am quite aware my grades/scores are very poor and that it is a huge stretch to apply, but I decided I might as well try. The worst a more prestigious school like UCI can do is reject me.
UC GPA: 3.35
SAT: 1790 (retaking on December 4th, I hope)
SAT II US History: 670
SAT II Math 2: 640
Cumulatively I have taken 6 AP courses and 9 Honors courses.
Extracurriculars:
Animal Rights Club for two years.
I’m in Desi Club, Senior Class Committee, Harry Potter Alliance, Club ED, and a Journalism News Editor. I was also a tutor to students who failed to pass the CAHSEE.
Volunteer: I volunteered for about 30 hours with Cats In Need.
Work Experience: 2000+ hours working at my father’s automotive repair shop over these 3+ years
Miscellaneous (not sure if it might be helpful somehow): My brother is an alumnus of UCI and my mother works as a RN for UCI.
~~~No I don’t think that because I have family members affiliated with the institution that I have some extreme advantage over other applicants. I did not include their affiliation in my application.~~~
-Im not sure how difficult life circumstances play into admissions but I did choose to write a (OK) personal statement about being diagnosed with severe depression in my sophomore year. I tried to refrain from sounding like a liability or charity case though, obviously focusing on what Ive gathered from the experience and how college might serve as an outlet to help me with it et cetera.
Any constructive criticism would be highly appreciated, thanks!