Honestly I feel it's impossible to "get your foothold in your 20s", because that was only achievable back before a certain point in history where it became impossible to do.
When we're born, our parents, and us in turn, don't give a single shit about the world. All that matters is childhood, fun, cartoons, whimsy, and enjoying life.
As teens, more or less the same, all that matters is puberty, school, growing up, and maybe looking at a future.
The only people these days that can have their magical age 19 foothold on life, are children of the Wealthy that have this the moment they're conceived, kids raised by hard parents, resulting in those kids barely having a childhood outside of work hard, or the absolutely lucky kids.
This feeling of "busting over 21", is further pushed by modern nihilists and nihilistic television and comedy like Robot Chicken and Rick and Morty, basically saying, "Unless you've lose your virginity at 18, and made it through college with perfect scores and barely any debt by 25, UR A FAIL and might as well kill yourself you fucking burger fryer."
Media likes to keep putting stress on this, as well as other things that fuck up kids like genital size, absolute bodily perfection, finding "the perfect one", and so on. When the truth is none of this shit matter.
Yeah it sucks you couldn't get stacy in high school or kick chad in his nuts, but you shouldn't have that keep holding you back when you're pushing 30, because that is pathetic. Grow over that and move on. Not everyone born can be Einstein, Ghandi, Geroge Patton, or Winston Churchill, some of us are born to be simply John & Jane Doe, simple people.
So cheer the fuck up everyone, don't think suicide because you didn't "make it hard", just be happy with the shit you got that makes you happy and move forward.