You know how you lose 75 lbs? 1 lb at a time
Don't focus on the big picture, just focus on what you can do today. If today seems overwhelming, focus on what you can do for your next meal.
It's good that you've recognized what overwhelms you... now just find a plan that breaks up that goal into manageable chunks.
You can do this!!!

And getting off your blood pressure medicine is an awesome goal!!!