Revision is a long, unwieldy process full of insecurities, small setbacks, and large improvements. It is, to be frank, the emotional equivalent of the tilt-a-whirl. In the micro sense, the process is different for every book because you always manage to screw up in new, colorful ways.
In the macro sense, however, there's a fairly predictable path that can be summed up pretty well in gifs. Like so...
Step One: Sending the book to beta readers:
Step Two: Waiting patiently:
Step Three: More waiting, because your beta readers have lives or something apparently, and didn't drop everything to read your book. Alternatively, it's because the book is a garbage fire:
Step Four: More waiting because now they're just fucking with you.
Step Five: Finally going through the beta readers' comments:
Step Six: Thinking about your beta readers' comments:
Step Seven: Deciding your beta readers are picking on you and you're going to ignore them forever because they're jerk-faces:
Step Eight: When time and perspective make you realize you are not only wrong...
...but an asshole.
Step Nine: Looking at the Garbage Fire that is your book with an honest eye:
Step Ten: Looking through the millions of possibilities and suggestions for the clues to success:
Step Eleven: You want to be an deep sea diver. You want to be a kindergarten teacher. You want to jettison this manuscript into space, because...wait. WAIT. What if...what if you move that to there, and do that there, and then he does that with him...BREAKTHROUGH.
Step Twelve: Oh, yeah. You got this. You got this so hard:
Step Thirteen: Channeling earnest Robin Williams:
Step Fourteen: Re-reading the new, revised, brilliant ART that your beta readers selflessly helped you create, despite your self-indulgent, narcissistic tendencies:
Step Fifteen: Sending the new draft to your editor:
Don't worry. Eventually you'll get back to Walter White levels of confidence again. Just in time for the release date.