I always wanted hamstrings. Never really trained them.
I spent years chasing bigger hamstrings, but I trained on my own terms instead of training what I actually needed. Looking back, my injuries forced me to change my approach. Thankfully they did, because today I train smarter, my hamstrings are growing, and I am still learning.
The learning never ends and that is why I always check my form so I don't let my ego get in the way or avoid training like a professional because I refuse to evolve, adapt and come back better!