

25M 170cm/5'7", 49kg(108lb) to 64kg(141lb) 4 years of progress, natural
It was a long and hard journey, but I finally made it!
During the first year, I had just joined the gym, but I wasn't consistent and didn't track my calories.
In the second year, I started learning about training and gym programming. I also made sure to drink a protein shake almost every day and forced myself to eat more. Unfortunately, during the summer break I stopped training for 3 months because I lost motivation.
The third and fourth years were when I really locked in. I started taking the gym seriously, tracking my calories consistently (around 2,500 kcal/day), and making sure I hit my daily protein goal every single day. Sometimes, if I was short on protein by the end of the day, I'd even eat a can of tuna just to reach my target. I can confidently say I almost never skipped a workout, except when I was sick or had other unavoidable problems. I was training 5 times a week. By the end of the fourth year, I reached 66 kg, but I also gained a bit too much fat, so I've been on a small cut.
Right now, I'm just maintaining. I'm feeling a bit stalled, but once summer is over, I'll start bulking again but this time with a leaner bulk.
Still a long way to go, since my goal is 68kg with 15-17% body fat, but I'm happy with the progress so far.