Welcome to the forum!
The good news about this is there is no One. Right. Answer as to where to start. It’s rather like cleaning a room. Start where you want and go from there.
Now, we all have our preferences for cleaning a room. Some of us will start with the “easy” things, perhaps in hopes of racking up a string of successes to further inspire us. Others of us may start with the “biggest” thing, just for the relief of getting that out of the way. Still others have a certain method to our madness (like picking things off the floor before trying to vacuum the carpet). But the reality behind all of this is that, when we start somewhere and we continue to do our cleaning, as long as we continue to our cleaning, we will wind up with our clean room, no matter where we started.
So, it really doesn’t matter where you start…as long as you do start. Isn’t that good to know?
Now, I wonder if you actually do know where you’d like to start because you sort of tell yourself and us this:
Why not start here? Seems like as good a place as any, right? 
And if not here, where would you like to start?
It really doesn’t matter because (in addition to what I’ve said just now) at the end of the day, you’ll probably discover that they’re all intertwined, that the physical influences the emotional and *vice versa."
Have you checked out our Ultimate List of Morphic Field Stacks thread? Maybe that will inspire you to your first steps? Or you might want to research the Point of No Return (PONR) stacks or field? Or you might want to look at some of our general healing fields (like the The Politics of the Body heal every disease, The Shamanic Medicine Blend or the Reiki fields, etc.)? Or maybe some self-love fields to give you resolve to take your first step? Or maybe some higher self fields to get your own clarity?
I’m not throwing all those options out to overwhelm you but to underscore how you get to play (and that really is the operative word and attitude there) with all of this.
There’s an old Chinese proverb which says “a journey of 1,000 miles begins with a single step.” I’m eager to see which first step you take on your journey!