"The fastest"? I gave up after years of suffering and humiliation. Imagine living the same sh*t for over 6 years without any result nor positive change and realizing that was all because of my appearance. And I only gave up on women, not on life, as you already know.
I lived the same sh*t for far longer than 6 years.
I was in the same Jewish school from age 4 to age 17, constantly bullied by other students and teachers every day. I grew up in a bullied environment. Sometimes I had friends and other people would lobby my friends to betray me, like it was a holy campaign, and eventually they did. I got a lot of comments on my teeth, my hair, my acne, my face, etc.I'd also get bullied at the neighbourhood swimming pool as the guy whose hair doesn't get wet (I had a Jewfro). I was rejected by all the girls I was interested in for a long time. Everything I did was devalidated, my work, my time in gym class, I'd be followed around randomly and verbally abused, all day every single school day for fourteen years, from age 4 (more so from age 7) to age 17.
Looking back I was no bouquet of flowers of myself. I did a lot of gross sh*t, rude sh*t, obnoxious sh*t because I didn't know better, which would have exacerbated all problems.
My parents would fight when I got home, my mother liked to scream for 2 or 3 hours minimum every day, she said that screaming helped her relax. One time, she was screaming the night before a calculus exam. I told her I had an exam the next day and needed to sleep. She said that's not appropriate, if I had prepared properly then the lack of sleep wouldn't affect me.
At an earlier age, we lived in an apartment, and the other tenants in the apartment would organize petitions to have our family kicked out, because my mother was screaming too much and bothering the rest of the building.
I coped by playing a lot of video games. During high school, I became one of the world's best players at Age of Empires II, that was fun and interesting. I saw the life cycle of going from rookie, to being an intermediate at something, to being an expert, to being an eclipsed former expert, and everything that goes into it.
My saving grace was my intelligence and drive, and also living in a socialist state (Quebec) meant I wasn't extremely poor, I didn't need $150,000 in student loans to finish university -- my life would be a lot worse if I had grown up in Tennessee. Got my first serious girl at age 23 which took a lot of work. I was working out and impressing intellectually and wearing nice clothes and it took a long courtship. A few years later I got a splendid PhD, finishing on time, including a ~500-page dissertation and 9 first-authored academic publications.
As an adult I dealt with early-onset erectile dysfunction which dwarfs the other problems. If you have physical health I think you have the single most important thing going for you.
You're also 24 years old, which is young, and you're not short. If you were 5'3 I'd have more understanding for you giving up on life. Women seemingly value height more than all other attributes, so if you're 5'3 it is reasonable to give up on life. You're 5'9 though, you're average height on the most important variable, so that limits how extreme your situation can be. FWIW I'm 1.81 meters, but with all my issues I would throw in the towel if I was 1.60 meters, I might have committed suicide by now honestly.