Howdy Determined Me!
Welcome to the board (I'm 23 too!) I've been a heavy person all my life (well apart from maybe last year) but it IS possible to change, it IS doable. Easy? No. Nothing worth having is. Just remember, when you feel like flagging and it feels hard, THERE IS NO EASY WAY.
And if that's depressing, then just think of the satisfaction when you DO go out and exercise and when you DO eat well. It's not just the numbers on the scale or the clothes sizes, it's the internal changes that are the best ones.
Good luck
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