In the ~6 months since I've turned 23, I have lost around 30lbs myself. I was heartbroken from a woman I liked leaving me and turned that into the gym. If I can do it (and boy did I believe I could not do it), there is nothing stopping you from doing it. It is not easy, boy is it not. But man, it is WORTH it. Seeing the number tick down is so rewarding. I hope you can find something similar in your journey.