Yes it does man.
I'm 26, also 5'8 5'9, been a absolute skinny weakling all my life, persistent minor acne issues, lazy eating habits.
Finally started keeping workout journal 2 years ago but didn't workout smart, just doing reps till exhaustion which didn't increase my strength at all in the long run.
Finally got F*ckin sick of this shit, read Convict Conditioning 1,2 and 3, The Naked Warrior, Power to the people, beyond bodybuilding, C-MASS calisthenics and now i formed a proper progression based calisthenic workout and my gut feeling tells me im doing it the right way now.
Also completely regimented my diet, i read Anabolic Diet which promotes max fat and protein with minimal carbs on weekdays and high carb load on weekends which causes the body to preserve muscle when losing fat.
Through sheer force of willpower i also gave up F*ckin sugar... goddamn sugar, sweets and cakes and all that good stuff. I think ill only indulge on the weekends or after sports or whatever.
Also read the way of energy which teaches zhan zhuang, similar to tai chi but mostly involves simply standing still for a while instead of moving around, its very interesting.
I just got off night shift about a month ago after a year which was totally mentally and physically destructive. After i got off the shift i couldn't for my life wake up in the morning, but finally today forced myself to get up at 7am, did my taichi for 10 minutes and jump roped for 10 minutes all before breakfast, its awesome to start your day on a high note instead of waking up at 3 F*ckin PM and go straight to my day job.
I don't see why i can't follow these SIMPLE habits for the rest of my life, im certain to live far longer and far healthier.
After reading this you have inspired me to look up those books and get a plan together! I'm thin and have always been under weight but through I was healthy enough. I don't eat junk food (no fast food in 4 years) but I can improve. Thanks for sharing!