Welcome! I'm 6'3" too and I fluxuate between 205 and 208...My goal is to be between 195 and 200. My heaviest (and probably unhealthiest) was when I was at 235. Glad those days are gone, it's much easier to tie my shoes now.
I got down to 202 when I got sick with mono, which I still have, and was ordered to stop exercising until the virus went dorment. It's frustrating to have been so close but I'm trying to eat low cal in the meantime although I am not used to watching calories so I've goofed up plenty.
Yeah you can do it just count , count and count again. best thing to do is make a journal so you can see your progress and make goals of what you want to improve on every week . make reachable goals not things to far out of reach and you can do almost anything. It's better to succeed in small things and gradually reach a goal , then to continually fail in large things and be down on yourself.