The best advice I could give is to read the entire pattern BEFORE you start doing/cutting/sewing anything. All the way through. Look at the templates or any special papers included.
It should be like planning a road trip....you would have Googled all the maps and plotted your route BEFORE you got in the car, right?
Same thing. You really have to have an idea of where you're going as you approach each step. And also about where you're supposed to be 3 steps down the pike.
That way you'd have an inkling if something is off, or all of sudden there is some technique or math that you should have figured out four steps back. Or found out you needed to cut the fabric a certain way, but didn't read ahead and now you don't have enough because you miscut.
You get the idea.
And it's not a race. Breathe deeply. If it's really not fun, put it away and find a new project.