Will losing 100 pounds help me feel younger?

I’m 33F, 5’8”, and 250 lbs. I lost weight in the last and got down to 135, but I’d be happy at 150. My knees hurt, I’m uncomfy and feel like the Michelin man. I absolutely hate pictures, obviously. Mainly my joints hurt and I’m tired all the time. Will losing 100 pounds make me feel young again, or is this just being old?