You will never be able to truly do it till you are truly ready for it. You have to wake your self up and see it as it is. So the real question is are you ready?
Christy, set some achievable goals and start small. There are "workouts" here that last only one minute. Start with some of those, then work your way up. It is the accumulation of many small successes that will build into the final success of achieving your end goal. There's no secret to motivation. If you want it, you do it. It's all on you. We can offer support and encouragement but you're the only one who can motivate YOU.
So do you want it? DO IT! We'll be here to cheer you on!